Quiz about Free Body Diagrams

Question 1

Name the missing force....

Accepted Answer

normal force

Answer

weight force

Answer

frictional force

Answer

tension force

Question 2

Name the missing force...

Accepted Answer

spring force

Answer

weight force

Answer

normal force

Answer

buoyant force

Question 3

Name the missing force...

Accepted Answer

frictional force

Answer

weight force

Answer

thrust

Answer

buoyant force

Question 4

Name the missing force...

Accepted Answer

applied force

Answer

weight force

Answer

tension force

Answer

drag

Question 5

The force that keeps objects on top of surfaces instead of letting them sink into the surface is known as:

Accepted Answer

normal

Answer

abnormal

Answer

static

Answer

inertia

Question 6

The force exerted by ropes and chains is called

Accepted Answer

tension

Answer

normal

Answer

elastic

Answer

mechanical

Question 7

When determining the NET force on an object you should (TWO correct answers)

Accepted Answer

subtract forces in opposite directions

Accepted Answer

add forces in the same direction

Answer

divide by velocity

Answer

multiply by acceleration

Question 8

What is the NET FORCE of this diagram?

Accepted Answer

17 N, right

Answer

17 N, left

Answer

23 N, right

Answer

12 N, up

Question 9

This object would be moving (pick all that are correct):

Accepted Answer

up

Accepted Answer

right

Answer

down

Answer

left

Question 10

The down-arrow in this diagram is most-likely:

Accepted Answer

gravity

Answer

normal

Answer

a push or pull

Answer

friction

Question 11

Which of the following is true about this free-body diagram?

Accepted Answer

the forces are are balanced

Answer

the object is free-falling

Answer

the object is moving upward

Answer

the forces are unbalanced

Question 12

This diagram can be used to indicate which of the following? (TWO correct answers)

Accepted Answer

a object at rest

Accepted Answer

an object moving at a constant velocity (speed)

Answer

an object accelerating

Answer

(Trick question -- there is only one correct answer)

Answer

an object decelerating

Question 13

Calculate the net force acting upon the object.

Accepted Answer

0 N

Answer

10 N north

Answer

10 N south

Answer

14.1 N east

Question 14

If these boys are pulling with the same amount of force.  What will happen?

Accepted Answer

They will not move at all.

Answer

The boy in blue will win.

Answer

The boy in red will win.

Answer

Both will fall down.

Question 15

Match description with free-body diagram.

Accepted Answer

A book is at rest on a tabletop.

Answer

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.

Answer

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

Answer

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

Question 16

Match description with free-body diagram.

Accepted Answer

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

Answer

A book is at rest on a tabletop.

Answer

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.

Answer

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

Question 17

Which of the following free body diagrams correctly depict the forces acting on an object that is moving at a constant velocity?

Accepted Answer

Option C is correct

Answer

A.

Answer

B.

Answer

D.

Free Body Diagrams

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