A disc of moment of inertia `2 kg m^(2)` is acted upon by a constant torque of 40 Nm. If it is initially at rest, then the time taken by it to acquire an angular velocity 100 rad/s will beA. 20 sB. 10 sC. 5 sD. 4 s

A disc of moment of inertia `2 kg m^(2)` is acted upon by a constant t

1.	A disc of moment of inertia `2 kg m^(2)` is acted upon by a constant torque of 40 Nm. If it is initially at rest, then the time taken by it to acquire an angular velocity 100 rad/s will beA. 20 sB. 10 sC. 5 sD. 4 s
Answer» Correct Answer - C `t=(I(Delta omega))/(lambda)=(2xx100)/(40)=5` sec.

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A disc of moment of inertia `2 kg m^(2)` is acted upon by a constant torque of 40 Nm. If it is initially at rest, then the time taken by it to acquire an angular velocity 100 rad/s will beA. 20 sB. 10 sC. 5 sD. 4 s

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