A solid disk of radius 0.20 m and a mass of 1.0 kg starts at rest and then speeds up to 100 rad/s in 10s. What is the torque that produces this rotational acceleration?

Answer 1

ω=ε•t
ε=ω/t=100/10=10 rad/s²
M=I•ε=(m•R²/2) • ε= 1•0.2²•10/2=0.5 N•m