Question

Calculate the value of the torque when 10 N force is applied perpendicular to a 10 m length of rod fixed at the center.

(a) 200 N-m

(b) 300 N-m

(c) 100 N-m

(d) 400 N-m

I have been asked this question in an online interview.

This interesting question is from Dynamics in chapter Dynamics of Electrical Drives of Electric Drives

Answer 1

Right choice is (b) 300 N-m

Best explanation: Torque can be calculated using the relation T = (length of rod) × (Force applied) = r×F×sin90. F is given as 10 N and r is 10 m then torque is 10×10 = 100 N-m. (the angle between F and r is 90 degrees)