A body of moment of inertia of 3kg−m2 is rotating with an angular velocity of 2 rad/sec and has the same kinetic energy as a mass of 12 kg moving with a velocity of
A
8 m/s
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
0.5 m/s
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
2 m/s
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
1 m/s
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution
The correct option is D 1 m/s Rotational kinetic energy of the body =12Iω2 and translatory kinetic energy =12mv2
According to problem =12Iω2=12mv2⇒12×3×(2)2=12×12×v2⇒v=1m/s.