# AP (Advanced Placement) Physics(B-C): Questions 63 - 65 of 921

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## Question number: 63

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MCQ▾

### Question

The illustration shows a pulley system with a fixed pulley attached at the top and a movable pulley at the bottom to which an object with weight W is attached. A rope is attached to the top pulley, wound around the bottom pulley, and then up and around the top pulley. Pulling down on the rope in the direction shown with a force F causes the object to be lifted upward. Assume constant speed, and neglect the masses of the pulleys and rope. As the force F moves downward a distance d, how far does the object move upward?

### Choices

Choice (5)Response

a.

b.

c.

d.

e.

All of the above

## Question number: 64

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MCQ▾

### Question

An object with a mass of kg on the surface of Earth is taken to the moon, where the gravitational field on moon is of that on Earth. What is the mass of the object on the surface of the moon?

### Choices

Choice (5)Response

a.

b.

c.

d.

e.

Question does not provide sufficient data or is vague

## Question number: 65

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MCQ▾

### Question

When a satellite is in uniform circular orbit around Earth, what are the forces that must be exerted on the satellite to keep it in orbit?

### Choices

Choice (5)Response

a.

The gravitational force of Earth on the satellite and a centripetal force

b.

The satellite needs no forces exerted on it to remain in orbit

c.

The gravitational force of Earth on the satellite and a horizontal force to keep it moving

d.

Only the gravitational force of Earth on the satellite

e.

Question does not provide sufficient data or is vague

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