Systems of Part...

An automobile engine develops 100 kW when rotating at a speed of 1800 rev/min. What torque does it deliver ?

A 10 kg body hangs at rest from a rope wrapped around a cylinder 0.2 m in diameter. The torque applied about the horizontal axis of the cylinder is

Which is a vector quantity ?

When a torque acting upon a system is zero, then which of the following will be constant ?

The instantaneous angular position is a point on a rotating wheel is given by the equation θ(t) = 2t³ – 6t². The torque on the wheel becomes zero at

A disc is rotating with an angular speed of ω. If a child sits on it, which of the following is conserved ?

If the radius of the earth is suddenly contracts to half of its present value, then the duration of day will be of

The moment of momentum is called

Two bodies have their moment of inertia I and 2I respectively about their axis of rotation. If their kinetic energies of rotation are equal, their angular momentum will be in the ratio

The radius of a rotating disc is suddenly reduced to half without any change in its mass. Then its angular velocity will be