Question

Solve the questions in the file

Answer 1

Step-by-step explanation:

M = Fd

a. Mphone = (1.5 N)(0.3 m) = 0.45 N·m

b. 0.45 N·m = Fmuscle(0.03 m)

Fmuscle = (0.45 N·m) / (0.03 m) = 15 N

c. Because the system is in equilibrium Mphone = Mmuscle

For the moments to be equal, Fmuscle > Fphone because the distance of Fmuscle from the pivot is much less than the distance of Fphone from the pivot (0.03 m < ).30 m)