Author Question: A 3.0-kg mass and a 5.0-kg mass hang vertically at the opposite ends of a rope that goes over an ... (Read 85 times)

Sportsfan2111 · **on:** Jul 29, 2018

A 3.0-kg mass and a 5.0-kg mass hang vertically at the opposite ends of a rope that goes over an ideal pulley. If the masses are gently released from rest, how long does it take for the 3.0-kg mass to rise by 1.0 m?

A) 0.41 s
B) 0.74 s
C) 0.82 s
D) 1.8 s
E) 0.90 s

Question 2

An LRC ac circuit has a reactance (due to its capacitance) of 17 k, a reactance (due to its inductance) of 9.0 k, and a resistance of 28 k. What is the power factor of the circuit?

A) 0.96
B) 0.28
C) 1.04
D) 0.48