Question

Isaac applies a force of 40 N at an angle of 60 degrees up from the horizontal to a wooden rod using a spring scale. If he generates a torque of 73m.N, how long was the rod? Show the givens, required, equations to be used, calculations and final answer

Answer 1

The torque is

$$T=Fd\sin\theta,$$

express the length:

$$d=\frac{T}{F\sin\theta}=2.1\text{ m}.$$