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Avinash can run with a speed of 8 m//s a...

Avinash can run with a speed of 8 m//s against the frictional force of 10 N, and Kapli can move with a speed of 3 m//s against the frictional force of 25 N. Who is more powerful and why ?

A

Kapil is more powerful.

B

Avinash is more powerful.

C

Both have some power.

D

Cannot be determined

Text Solution

Verified by Experts

The correct Answer is:
B
Since power = force `xx` velocity,
power of Avinash, `P_A = (10N) (8m//s) = 80 W`
power of Kapil, `P_K = (25N) (3m//s) = 75 W`
Thus, `P_A gt P_K,` i.e., Avinash is more powerful then Kapil as he does more work (80J) per second then Kapil who does 75 J of work per second.
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