Question

A weight W attached to the end of a flexible rope of diameter d = 0.75cm is raised vertically by winding the rope on a reel as shown. If the reel is turned uniformly at the rate of 2 rps. What is the tension in rope. The inertia of rope may be neglected –

• A. 1.019 W
• B. 0.51 W
• C. 2.04 W
• D. W

Answer 1

Answer: (A)

1.019 W

Answer 2

$\downarrow _ { \mathrm { W } } ^ { \mathrm { T } }$ $\prod ^ { \mathrm { W } } \mathrm { a } \quad \mathrm { T } = \mathrm { W } \left( 1 + \frac { \mathrm { a } } { \mathrm { g } } \right) = 6 \pi$