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A solid sphere of mass 1 kg, redius 10 c...

A solid sphere of mass 1 kg, redius 10 cm rolls down an inclined plane of height 7m. The velocity of its centre as it reaches the ground level is

A

7m/s

B

10m/s

C

15m/s

D

20m/s

Text Solution

Verified by Experts

The correct Answer is:
B
`v = sqrt((2gh)/(1+ (K^(2))/(R^(2))))= sqrt((2 xx 10 xx 7)/(1+ (2)/(5)))= 10 m//s`
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