Statics: Net Force, Resolution of Forces

1.

Multiple Choice

1 min

1 pt

What is the net force?

5 N

45 N to the left

5 N to the right

45 N to the right

2.

Multiple Choice

1 min

1 pt

What is a force?

the PUSH or PULL on an object

The MOTION an object creates

The objects HITTING one another

Going REALLY FAST

3.

Multiple Choice

30 sec

1 pt

Which system is in the state of equilibrium?

top

bottom

both

4.

Multiple Choice

30 sec

1 pt

Is the cart in equilibrium?

Yes

No

5.

Multiple Choice

30 sec

1 pt

What is the SI unit for FORCE?

N (Newtons)

lbs (pounds)

g (grams)

m/s (meters per second)

6.

Multiple Choice

1 min

1 pt

If there are two forces going in the SAME direction, you would ...?

(-) Subtract the forces

(+) Add the forces

Neither

(x) Multiply

7.

Multiple Choice

1 min

1 pt

The FORCE that PULLS things down or back to EARTH.

Speed

Gravity

8.

Multiple Choice

30 sec

1 pt

If the object is at rest

net force is 5N

net force is 0N

net force is 10.N

9.

Multiple Choice

1 min

1 pt

This is an example of what kind of force?

Balanced Force

Pushing Force

Gravity Force

Unbalanced Force

10.

Multiple Choice

30 sec

1 pt

If you have balanced forces on a ball

It is in the state of equilibrium

CHANGES its MOTION

The object is accelerating

The object slowing down

11.

Multiple Choice

1 min

1 pt

What is the net force?

17 N Right

3 N Right

3 N Left

17 N Left

12.

Multiple Choice

2 mins

1 pt

10.-newton force is acting at 30° above the horizontal. What is the magnitude of the horizontal component of a force?

8.7 N

5 N

10 N

11 N

13.

Multiple Choice

2 mins

1 pt

10.-newton force is acting at 30° above the horizontal. What is the magnitude of the vertical component of a force?

8.7 N

5 N

10 N

11 N

14.

Multiple Choice

3 mins

1 pt

Two 30.-newton forces act concurrently on an object. In which diagram would the forces produce a resultant with a magnitude of 30. newtons?

1

2

3

4

15.

Multiple Choice

3 mins

1 pt

A force of 60 newtons is applied to a rope to pull a sled across a horizontal surface at a constant velocity. The rope is at an angle of 30 degrees above the horizontal. Calculate the magnitude of the component of the 60.-newton force that is parallel to the horizontal surface.

52 N

55 N

30 N

22 N

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