Bennett Mechanical Test Bennett Mechanical Friction and Inclined Planes Questions and Answers 3

Question 1

When an object slides down a frictionless inclined plane, which energy transformation occurs?

Accepted Answer

Gravitational potential to kinetic

Answer

Kinetic to potential

Answer

Thermal to kinetic

Answer

Chemical to thermal

Question 2

A 300 N effort is used to push a 600 N box up an incline. What is the mechanical advantage?

Accepted Answer

2

Answer

1

Answer

3

Answer

0.5

Question 3

On an inclined plane, the normal force is always perpendicular to which surface or direction?

Accepted Answer

The surface of the incline

Answer

The horizontal ground

Answer

The direction of gravity

Answer

The direction of motion

Question 4

Which surface combination would have the HIGHEST coefficient of friction?

Accepted Answer

Rubber on dry concrete

Answer

Ice on ice

Answer

Wood on wood

Answer

Steel on steel (dry)

Question 5

As a box is pushed UP a slope, in which direction does the friction force act?

Accepted Answer

Down the slope

Answer

Up the slope

Answer

Perpendicular to the slope

Answer

Horizontally

Question 6

The efficiency of an inclined plane is reduced when which of the following occurs?

Accepted Answer

Friction between the object and surface increases

Answer

The angle of the ramp decreases

Answer

The object being moved is lighter

Answer

The surface becomes smoother