A cord of negligible mass is wound around the rim of a wheel supported by spokes with negligible mass. The mas…

Question

A cord of negligible mass is wound around the rim of a wheel supported by spokes with negligible mass. The mass of the wheel is $10 \, \text{kg}$ and radius is $10 \, \text{cm}$ and it can freely rotate without any friction. Initially the wheel is at rest. If a steady pull of $20 \, \text{N}$ is applied on the cord, the angular velocity of the wheel, after the cord is unwound by $1 \, \text{m}$ , will be:

A
$20 \, \text{rad/s}$
B
$30 \, \text{rad/s}$
C
$10 \, \text{rad/s}$
D
$0 \, \text{rad/s}$

Accepted Answer

A. **$$20 \, 	ext{rad/s}$$**

Answer

B. **$$30 \, 	ext{rad/s}$$**

Answer

C. **$$10 \, 	ext{rad/s}$$**

Answer

D. **$$0 \, 	ext{rad/s}$$**

Answer & step-by-step solution

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