Inclined Planes

Inclined Planes

Assessment

Assessment

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Physics

9th - 12th Grade

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Hard

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10 questions

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1.

Multiple Choice

30 sec

1 pt

Media Image

A block slides down a frictionless inclined plane that makes an angle θ with the horizontal.

Which of the expressions shown below expresses force which is parallel to the inclined surface?

mg cos

mg sin

g

2g

2.

Multiple Choice

30 sec

1 pt

Media Image

The normal force equals

mg cos

mg sin

g

2g

3.

Multiple Choice

1 min

1 pt

A 25 N crate slides down a frictionless incline that is 25° above the horizontal. The magnitude of the normal force of the incline on the crate is:

11 N

23 N

25 N

100 N

4.

Multiple Choice

30 sec

1 pt

Media Image

A heavy wooden block is dragged by a force F along a rough steel plate, as shown in the diagrams for two cases. The magnitude of the applied force F is the same for both cases. The normal force in (ii), as compared with the normal force in (i) is:

the same

greater

less

none of the above

5.

Multiple Choice

1 min

1 pt

A 25 N crate is held at rest on a frictionless incline by a force that is parallel to the incline. The incline is 25 degrees above the horizontal.

The magnitude of the applied force is ________

4.1 N

4.6 N

11 N

23 N

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