A tangential force of 10 N is applied on the periphery of a ring due to which it starts rotating about an axis through its centre and perpendicular to its plane. What is the work done by this force in rotating the ring by 45o? {R = 2m}.
A
4πJ
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
5πJ
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
10πJ
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
15πJ
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is B5πJ Torque produced = rF = 20 N-m Angle rotated = 45o=π4radians Work done =τθ=20π4=5πJ.