Question

The Angular velocity of a body is 2i+3j+4k and torque is i+2j+3k.calculate rotational power

Answer 1

Hello friend,

◆ Answer-

P = 20 W

◆ Explaination-

# Given-

τ = i + 2j + 3k

ω = 2i + 3j + 4k

# Solution-

Rotational power is calculated by dot product of torque and angular velocity.

P = τ.ω

P = (i + 2j + 3k).(2i + 3j + 4k)

P = 2 + 6 + 12

P = 20 W

Therefore, rotational power of the body must be 20 W.

Hope it helps...