Is it possible for the object in the diagram to be moving to the right and have this FBD?

Yes. It could be moving at a constant velocity.

Yes. It's possible that the x forces were just left off the diagram.

No. The FBD shows that the system is in equilibrium.

The Earth pulls downward on a pingpong ball with a force of 1N. If this is the "action" force, what is the "reaction" force?

The ping pong ball exerts a force of 1 N on the Earth

The ground exerts a force of 1N on the ping pong ball

The ping pong ball pushes down on the earth with a force of 1N

The is no reaction force when a gravitational force is involved

As the angle of the incline increases, what happens to the normal force?

The normal force is not affected by the incline

The normal force is only dependent on the force due to gravity

Which of the following statements is true about the image above?

The blocks will experience the same acceleration

The accelerations of the blocks will vary according to their mass

The net force acting on each block is the same

The 3m box will eat the 2m and the m boxes

Which of the following is not true about the system?

T 3 is equal to the scalar sum of the magnitudes of T 2 and T 1

T 3 is equal in magnitude to F g

The x- components of the T 1 and T 2 and equivalent but in opposite directions

A man standing on a scale in an elevator notices that the scale reads 40 newtons greater than his normal weight. Which type of movement of the elevator could cause this greater-than-normal reading?

moving upward at a constant speed

moving downward at a constant speed

AP Physics Free Body Diagrams

Authored by Christopher Dartland

Physics

11th - 12th Grade

NGSS covered

Used 119+ times

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25 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Name the missing force....

weight force

normal force

frictional force

tension force

Tags

NGSS.HS-PS2-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A force of 8 Newton’s is applied to a crate so that it moves at a constant velocity of 1.5 m/s. What is the magnitude of the frictional force?

1.5 N

8 N

12N

0 N

Tags

NGSS.HS-PS2-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Is this object in equilibrium?

Yes and it's moving right

Yes and its at rest

No, it's accelerating right

No, it's at rest

Tags

NGSS.HS-PS2-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the NET FORCE of this diagram?

17 N, right

17 N, left

23 N, right

12 N, up

Tags

NGSS.HS-PS2-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A force vs. time graph is shown for an elevator moving between floors. Why is there no net force in the middle of this graph?

There is. You can't trick me.

The elevator is at rest

The elevator is accelerating

The elevator has a constant speed

Tags

NGSS.HS-PS2-1

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

A tennis ball is thrown upward by a student so that it leaves their hand at 5.29 m/s. After it leaves their hand, what keeps it moving up?

gravity keeps it moving up.

Nothing. The ball simply has inertia.

It is not actually moving up. That is a construct.

Tags

NGSS.MS-PS2-4

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Match description with free-body diagram.

A book is at rest on a tabletop.

A gymnast holding onto a bar, is suspended motionless in mid-air. The bar is supported by two ropes that attach to the ceiling. Diagram the forces acting on the combination of gymnast and bar.

An egg is free-falling from a nest in a tree. Neglect air resistance.

A flying squirrel is gliding (no wing flaps) from a tree to the ground at constant velocity. Consider air resistance.

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

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AP Physics Free Body Diagrams

Name the missing force....

A force of 8 Newton’s is applied to a crate so that it moves at a constant velocity of 1.5 m/s. What is the magnitude of the frictional force?

Is this object in equilibrium?

What is the NET FORCE of this diagram?

A force vs. time graph is shown for an elevator moving between floors. Why is there no net force in the middle of this graph?

A tennis ball is thrown upward by a student so that it leaves their hand at 5.29 m/s. After it leaves their hand, what keeps it moving up?

Match description with free-body diagram.

Here are 3 FBD diagrams for an elevator. Consider them to be A, B, C. Which one shows an elevator accelerating upward?

Here are 3 FBD diagrams for an elevator. Consider them to be A, B, C. Which one shows an elevator at rest?

The box on the incline is at rest due to friction. Which of these calculations would allow you to get the frictional force?

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