Question

Problem 3

Answer 1

Given information

Friction is the force that opposes the relative motion of solid surfaces, layers of fluid, and physical elements sliding against each other. Frictional forces, such as the traction required to move without slipping, can be beneficial, but they also present a large measure of opposition to the motion.

Step-by-step explanation

Step 1.

For the free-body diagram of M,

 Weight of M

 Normal reaction by ground on M

  Frictional force on M by ground

 Tension in the string connecting M and truck