A bicycle wheel of negligible rim thickness has a moment of inertia of 0.60 kg·m²…
PHYSICS · Multi-part · AP · Physics 1: Algebra-based · Energy and Momentum of Rotating Systems · Energy and Momentum of Rotating Systems
Problem
A bicycle wheel of negligible rim thickness has a moment of inertia of 0.60 kg·m² about its central axle. Starting from rest, a mechanic applies a constant external torque of 1.2 N·m to the wheel for 2.5 s.
(a) Calculate the magnitude of the wheel’s angular momentum at t = 2.5 s.
(b) Determine the wheel’s angular speed at that instant.
(c) During the 2.5 s interval, through how many complete revolutions does the wheel turn?