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AP Physics C: Mechanics 3.5 Power Question Bank

Practise AP Physics C: Mechanics 3.5 Power by relating work and energy transfer to time, then applying the relationship to a motor lifting a mass.

Syllabus
Effective Fall 2024
Course
AP Physics C: Mechanics

Exam points

  • Calculate a motor's lifting time from power and gravitational potential energy using t = mgh/P.

Covered syllabus points

3.5.A—Describe the transfer of energy into, out of, or within a system in terms of power. TOPIC 4.1 Linear Momentum

3.5 Power question 1

[Maximum number: 1]

An electrical motor provides 0.50 W of mechanical power. How much time will it take the motor to lift a 0.1 kg mass at constant speed from the floor to a shelf 2.0 m above the floor?

A

0.25 s

B

0.40 s

C

1.0 s

D

2.0 s

E

4.0 s

Figure for Question 3.5 Power question 1 — AP Physics C: Mechanics
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