Which of the following actions will improve the efficiency of the pulley system?
A
reducing the mass of the pulley
B
increasing the friction force between the string and the pulley
C
increasing the mass per unit length of the string of the pulley
D
increasing the mass of the pulley
Verified Correct Answer: A.
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #34020)