Index Newest Popular Best. Sign Up: Free! Log In. There are many types of forces in physics. Let's see how much you know about them. Difficulty: Average. Played times. As of Oct 10 If an object is in free fall, what is the only force that is acting upon that object? There is no force acting upon it. Normal force. Applied force. If an object is at rest on a flat surface, there is always gravity pulling down and the normal force pushing up. Which force is greater? They are equal.
Depends on the object. What unit is used to measure forces? Meters per second squared. Which of these is NOT usually considered tension when a force is applied to its ends?
The coefficient of friction is a number that measures friction. It is not constant; it depends on what the two surfaces are. Usually the number will be between 0. Which Greek letter is used for this value? If an object is on a sloped surface of 45 degrees, in which direction is the normal force? Perpendicular to the surface. Straight up.
Parallel to the surface. Straight down. Which of these would NOT be considered an applied force? Pulling a string. Pushing a chair. Pushing the wall in front of you.
Assume that the coefficient of friction is the same for all three vehicles. The car.Question 1: Define force. Is force a scalar or a vector quantity? Answer: A force is that cause which changes or tends to change the state of rest or of uniform motion of a body. Force is a vector quantity. Question 2: State and define the unit of force in the S. Answer: The unit of force in S. Newton is defined as the force which, when applied on a body of mass 1 kg produces in it an acceleration of 1 ms 2.
Question 3: Define one newton. Write the relation between S. Relation between S. Question 4: Define 1 kgf. Answer: 1 kgf: It is the force due to gravity on a mass of 1kg. Question 5: i Where is the centre of gravity of a uniform ring situated? Answer: i Centre of gravity of a uniform ring is at its centre.
Question 6: Which of the following remains constant in uniform circular motion, Speed or Velocity or both? Answer: In uniform circular motion speed remains constant. Question 7: Define 1 Dyne. Answer: 1 dyne is that force which when acting on a body of mass 1 gram, produces an acceleration of 1 cm s -2 in it. Question 8: Define contact forces. Answer: The forces which are applied on a body through a connector, are called contact forces.
Forces like Frictional force, Mechanical force etc. Question 9: Define non-contact forces. Answer: The forces which act on a body without the help of any connector, are called non-contact forces or forces of distance. Gravitational force, Mechanical force etc. Question State the energy changes in the following devices while in use i A loud speaker ii A glowing electric bulb Answer: i Loud speaker: Electric energy to sound.
Question Give any two effects of a force on a non-rigid body. Answer: Two effects of a force on a non-rigid body are: i Force can change the state of rest or motion of the body ii Force can change the size or shape of the body.
Question Where does the position of centre of gravity lie for i a circular lamina ii a triangular lamina Answer: i Circular lamina — Centre of the lamina ii Triangular lamina — Point of intersection of medians.
Question What is Gravitational force? Give gravitational units of force. Answer: Earth exerts a force of attraction on each object. This force is due to gravity and its magnitude is directly proportional to the mass of the object.App buscar parejas
This force is known as gravitational force and its units are gravitational units. In MKS system the gravitational unit of force is kilogramme force i. In CGS system it is gramme force, gf. Question What is the work done by the gravitational force on the moon that revolves around the earth?Multiple choice questions are perhaps the easiest to complete - you simply put a cross in a box - however, the questions often have two answers that could, at first glance, be correct.
Don't make the mistake of reading the first answer and thinking this is correct without checking all the others. If it says 'Tick one box', you must tick one box. If you leave it blank or tick two or more boxes you will get zero marks. These multiple choice questions will not start with command words like 'describe' or 'explain'. They will be written in the form of a question like 'What…? There will be more multiple choice questions on the Foundation paper.
Force is a vector quantity. Which is a correct statement about a vector quantity? Tick one box. A vector quantity has direction and magnitude.
A scalar quantity has magnitude only. The figure shows the forces acting on a car moving at a constant speed. Which force would have to increase to make the car accelerate?
In order to make the car accelerate, the resultant force must be forwards. Force C needs to increase. What is the unit of momentum? The figure below shows the horizontal forces acting on a car. Which one of the statements describes the motion of the car?
Forces in Physics, tutorials and Problems with Solutions
If the forces on an object are balanced ie there is no resultant force it will remain stationary or continue travelling at a constant speed. Since the forces shown are due to the force of the engine and air resistance then the car must be moving at a constant speed. Multiple choice questions Multiple choice questions are perhaps the easiest to complete - you simply put a cross in a box - however, the questions often have two answers that could, at first glance, be correct.
Sample question 1 - Foundation Question Force is a vector quantity. Has direction only. Has direction and magnitude.
Has magnitude only. Has neither magnitude nor direction. It will be slowing down.Which of these is the best way to measure a force? Using a force meter. Using a ruler.Tarkon kauna 90
Using a thermometer. Forces can be:. Pushes only. Pulls only. Pushes and pulls. What is the unit of force called? The newton, n.
The newton, N. The neutron, N. What can we say about the forces on an object that is not moving? There must only be one force acting on it.
The forces must be balanced. It must be very heavy. The arrows in this diagram represent the sizes of forces acting on a stationary tennis ball. What will happen to the tennis ball? It will stay still. It will start to move upwards. It will start to move downwards. What happens to the air resistance on a car as the car goes faster?
It decreases. It stays the same. It increases. A force of 4 N acts on a lever 2 m from the pivot. What is the moment? One way to increase the turning force on a spanner is to:. Use a shorter spanner. Use a longer pivot. Use a longer spanner. Gravity is an example of what? A contact force. An un-contact force. A non-contact force. What store of energy does friction always produce?Played times.
Print Share Edit Delete. Live Game Live. Finish Editing. This quiz is incomplete! To play this quiz, please finish editing it. Delete Quiz. Question 1. When mass increases then gravity. The dog's force is?
What type of force? What type of force is holding this balloon to the wall? What force holds the planets in motion around the sun?Statsmodels kalman filter
What type of force causes these balloons to move toward or away from each other? What does the strength of gravity between two objects depend upon? All objects in the universe have a gravitational attraction to each other.
What force brings the pencil down? Which has more gravitational force acting upon it? What force ultimately slows the roller coaster to a stop? Simon wanted to know if the height of a ramp affected how fast the car went down it. What part of this experiment is Simon's Dependent Outcome Variable? After Simon conducted his experiment he analyzed his data and saw some speeds that were surprising.
Sample Problems and Solutions
Why would it be a good idea for Simon to ask his friends to replicate redo his experiment? They can test many more different variables that he did. So they can get better results.
They wouldn't do that, scientists do repeat other scientists experiments. Speed is. What two quantities must I know to calculate something's speed? What two measurements are necessary for calculating speed? Jupiter has about times more mass than Earth. What can you infer from this fact? Mass has no effect on the gravitational force between two objects.
What is defined as a push or pull? This type of force is when one object pushes or pulls on another object by touching it. This type of force is an attraction between two objects.
This type of force resist motion between two surfaces that are pressed together. If the net force is equal to zero, the forces acting on the object are.Speak now. We all know that any force equals mass times accelleration Well, how much on forces do you know? What kinds of forces are there However, what about tortion, tension and shear forces? What do you know about those? How much force does it take to crack an egg?
Could you really break an concrete with water? If you think you're a budding physicyst or rocket scientist, then this quiz will be right up your alley, along with calculators, graphs, fires and explosions! No-one forcing you Trivia Quiz. The Moment is the product of the force multiplied by the distance from the point an object will turn.
In our past classes, we got to understand pivots and how they work. To help you refresh your memory, take up the quiz below and Sample Question. Move forward. Move backward. Stop moving. Turn about a fixed point. Pneumatic And Hydraulic Systems! Trivia Questions Quiz. Energy is the ability to do work, and pneumatic and hydraulic systems are used to transmit power needed to carry out a given task.
Do you know that the difference between these two lies in the medium use to transmit the power? First element in line. Second element in line. Third element in line. Volcanoes As Constructive Forces. The construction of new houses and buildings. Plants growing on farms. Forces Quiz.
Force, Weight And Mass. No marks will be given for any name not found in the class list. The diagram shows a light beam pivoted at one end.
The answer to this question is letter A.These are the properties that a centroid's status has:To update a centroid, you need to PUT an object containing the fields that you want to update to the centroid' s base URL.
Once you delete a centroid, it is permanently deleted. If you try to delete a centroid a second time, or a centroid that does not exist, you will receive a "404 not found" response.Forces Quiz - MCQsLearn Free Videos
However, if you try to delete a centroid that is being used at the moment, then BigML. To list all the centroids, you can use the centroid base URL. By default, only the 20 most recent centroids will be returned. You can get your list of centroids directly in your browser using your own username and API key with the following links.
You can also paginate, filter, and order your centroids. When you create a new anomaly score, BigML. The closer the score is to 1, the more anomalous the instance being scored is. That is, how much each value in the input data contributed to the score. You can also list all of your anomaly scores. You can use curl to customize new anomaly scores. Once an anomaly score has been successfully created it will have the following properties.
Creating an anomaly score is a near real-time process that take just a few seconds depending on whether the corresponding anomaly has been used recently and the workload of BigML's systems.Dj pawan babu hi tech hindi song
The anomaly score goes through a number of states until its fully completed. Through the status field in the anomaly score you can determine when the anomaly score has been fully processed and ready to be used. Most of the times anomaly scores are fully processed and the output returned in the first call. These are the properties that an anomaly score's status has:To update an anomaly score, you need to PUT an object containing the fields that you want to update to the anomaly score' s base URL.
Once you delete an anomaly score, it is permanently deleted. If you try to delete an anomaly score a second time, or an anomaly score that does not exist, you will receive a "404 not found" response.
GCSE forces questions and answers
However, if you try to delete an anomaly score that is being used at the moment, then BigML. To list all the anomaly scores, you can use the anomalyscore base URL. By default, only the 20 most recent anomaly scores will be returned. You can get your list of anomaly scores directly in your browser using your own username and API key with the following links. You can also paginate, filter, and order your anomaly scores.
Association Sets are useful to know which items have stronger associations with a given set of values for your fields. The similarity score then is multiplied by the selected association measure (confidence, leverage, support, lift, or coverage) to create a similarity-weighted score and finally return a ranking of the predicted items. You can also list all of your association sets. You can use curl to customize new association sets.Leeboy 785 specs
Once an association set has been successfully created it will have the following properties. Creating an association set is a near real-time process that take just a few seconds depending on whether the corresponding association has been used recently and the workload of BigML's systems.
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