At what rate is the angular momentum increasing

Reference no: EM13336585

You are designing a lathe motor, part of which consists of a uniform cylinder whose mass is 90 kg and whose radius is 0.70 m that is mounted so that it turns without friction on its axis, which is fixed. The cylinder is driven by a belt that wraps around its perimeter and exerts a constant torque. At t = 0, the cylinder's angular velocity is zero. At t = 25 s, its angular speed is 400 rev/min.

(a) What is the magnitude of the cylinder's angular momentum at t = 25 s?

kg·m2/s

(b) At what rate is the angular momentum increasing?

kg·m2/s2

N·m

(d) What is the magnitude of the frictional force acting on the rim of the cylinder?

Reference no: EM13336585

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