for increasing the angular velocity of an object by 10 % the kinetic energy has to be increased by - Physics - Magnetism And Matter

Question

for increasing the angular velocity of an object by 10 % the
kinetic energy has to be increased by

Sanjay Singh · Accepted Answer

Dear student
1)kinetic energy is given by K=12Iω22)initial kinetic energyK1=12Iω2final kinetic energyK2=12I(ω+10100ω)2K2=12I(1110ω)2=I2×121100ω2=121100K13)percentage increase is(K2-K1)K1×100=(K2K1-1)×100=(121100-1)×100=21Regards