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

Question 1

Which type of friction acts on a stationary object that is being pushed but has not yet moved?

Accepted Answer

Static friction

Answer

Kinetic friction

Answer

Rolling friction

Answer

Fluid friction

Question 2

A 100 N block slides on a surface with a coefficient of kinetic friction of 0.3. What is the friction force?

Accepted Answer

30 N

Answer

0.3 N

Answer

300 N

Answer

3 N

Question 3

What is the mechanical advantage of a frictionless inclined plane that is 10 m long and 2 m high?

Accepted Answer

5

Answer

2

Answer

8

Answer

20

Question 4

Compared to sliding (kinetic) friction, rolling friction between the same surfaces is generally:

Accepted Answer

Less

Answer

Greater

Answer

Equal

Answer

Unpredictable

Question 5

On a 30° inclined plane, what is the component of a 200 N weight acting parallel to the slope?

Accepted Answer

100 N

Answer

173 N

Answer

200 N

Answer

50 N

Question 6

Adding a lubricant between two moving surfaces primarily reduces which quantity?

Accepted Answer

Friction

Answer

Normal force

Answer

Weight

Answer

Inertia