Inclined Plane

If an unbalanced force of 12N acts on a 6kg mass, the acceleration of the mass is

• 0.5 ms^-2

• 2 ms^-2

• 10 ms^-2

• 72 ms^-2

A student with a weight of 500 N sits on a chair.

The chair exerts a force on the student of

• 5 N

• 50 N

• 500 N

• 5000 N

Four forces are acting on an object as shown in the diagram.

If the object is moving with a constant velocity, the magnitude of force F must be

• 0 N

• 20 N

• 40 N

• 100 N

In the graph shown, the acceleration of an object is plotted against the unbalanced force on the object.

What is the object's mass?

• 1 kg

• 2 kg

• 0.5 kg

• 0.2 kg

In the diagram, a 10 kg block is at rest on an inclined plane at 15^o to the horizontal.

As the angle of the incline is increased to 30^o, the mass of the block will

• decrease

• increase

• stay the same

A cart rolls down an inclined plane with a constant speed.

Which arrow represents the direction of the frictional force?

• A

• B

• C

• D

The diagram represents a car resting on a hill.

Which vector best represents the weight of the car?

• A

• B

• C

• D

• the magnitude of force F only

The diagram shows a 10.0 kg mass held at rest on a frictionless 30.0^o incline by force F.

What is the approximate magnitude of force F?

• 9.81 N

• 49.1 N

• 85.0 N

• 98.1 N

• W would remain the same and the magnitude of F would decrease.

• W would remain the same and the magnitude of F would increase.

• W would increase and the magnitude of F would decrease.

• W would increase and the magnitude of F would increase.