Questions
Angular velocity of a body at an instant of time is . A constant torque of is applied on it . Then power input to the body is
detailed solution
Correct option is C
Power input =τ→.ω→=2i^+2j^+2k^.2i^+j^+4k^W=4+2+8W=14 WattTalk to our academic expert!
Similar Questions
A grinding machine whose wheel has a radius of 1/π is rotating at 2.5 rev/sec. A tool to be shar-pened is held against the wheel with a force of 40N. If the coefficient of friction between the tool and wheel is 0.2, power required is
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