A wheel rotating at an angular speed of 20 rads^(-1), is brought to rest by a constant. torque in 4s. If the M.I is 0.2 kg m^(2) the work done in first 2s is

A wheel rotating at an angular speed of 20 rads^(-1), is brought to re

1.	A wheel rotating at an angular speed of 20 rads^(-1), is brought to rest by a constant. torque in 4s. If the M.I is 0.2 kg m^(2) the work done in first 2s is
Answer» 50J 30J 20 J 10 J Answer :B