JEE Main Physics question

A mass of 10 kg connected at the end of a rod of negligible mass is rotating in a circle of radius 30 cm with an angular velocity of . If this mass is brought to rest in 10 sec by a brake, what is the magnitude of the torque applied?

• (A) N-mCorrect
• (B) N-m
• (C) N-m
• (D) N-m