Answer to Question #293832 in Physics for banihfrance05

Question

The length of a bicycle pedal arm is 0.152 m, and a downward force of 111 N is applied to the pedal by the riders foot. What is the magnitude of the talk about the bed alarm five on point when the arm makes an angle of (a) 30°, (b) 90°, and (c) 180° with vertical?

Answer 1

$$\tau=Fd\sin\theta,$$

(a) 30°: 8.436 N·m

(b) 90°: 16.87 N·m

(c) 180°: 0