Question

Due to application of a torque having a magnitude of 20 N-m, a ring is rotating at an angular velocity of 250 $\frac{rad}{s}$ at any given instant. What is the power delivered at this moment?

• A. 2500 J/s
• B. 5000 J/s
• C. 1000 J/s
• D. 1250 J/s

Answer 1

The correct option is B 5000 J/s

Power = $\tau .\omega$
= 20 $\times$ 250 = 5000 $\frac{J}{s}$