What is the net torque on the sphere as a function of time? (Use the following as necessary: t.)

Question

The angular momentum of a sphere is given by L = (−4.50t³) + (5.60 − 1.90t²) + (6.75t), where L has units of kg · m²/s when t is in seconds.

τ = ?  î + ?  ĵ + ?

Answer 1

dL/dt = τ = -13.5t²i - 3.8tj + 6.75k