Question

Solve the following problem using Newtons Laws. Blocks A, B, and C are being pushed across a frictionless table by a hand that exerts a constant horizontal force. Block A has mass 2M, block B has mass 3M and block C has mass M. The blocks move to the left.

a. Draw separate free-body diagrams for each block and a free-body diagram for the system. Label each force with • the object on which the force acts, • the object exerting the force, and • the type of force (normal, frictional, gravitational, etc.)

b. On the individual Free Body Diagrams, indicate all of the Newton’s 3rd Law force pairs by placing an ‘x’ on the members of the 1st pair, ‘xx’ on the members of the 2nd pair, etc.

c. Take the values of the force exerted by the hand is 24 N and M = 1 kg so that MA = 2 kg, MB = 3 kg, and MC = 1 kg.

Find:

-the acceleration of the system

-the magnitude of the net force on block A

-the magnitude of the force acting to the left on block B

Answer 1

Answer