ANY COPY PASTES FROM OTHER \"SIMILAR\" PROBLEMS WILL BE REPORTED. PLEASE GIVE DI
ID: 2232082 • Letter: A
Question
ANY COPY PASTES FROM OTHER "SIMILAR" PROBLEMS WILL BE REPORTED. PLEASE GIVE DIRECT ANSWER USING THE GIVEN NUMBERS. Will lifesaver if so :)
Three blocks are in contact with one another on a frictionless, horizontal surface as shown in the figure below. A horizontal force is applied to m1. Take m1 = 2.00 kg, m2 = 7.95 kg, m3 = 5.05 kg, and F = 22.0 N.
(d) Find the magnitudes of the contact forces between the blocks.
Between 1 and 2:
Between 2 and 3:
(e) You are working on a construction project. A coworker is nailing up plasterboard on one side of a light partition, and you are on the opposite side, providing "backing" by leaning against the wall with your back pushing on it. Every hammer blow makes your back sting. The supervisor helps you put a heavy block of wood between the wall and your back. Explain how this change works to make your job more comfortable.
Explanation / Answer
a = F/m = 22/15 = 1.4666 m/s2 d. Between 1 and 2: F-T = 2*22/15 => T = 18.066 N Between 2 and 3: N = 5.05*22/15 = 7.41 N e. Since the area is increased the applied pressure will be low as [force / area] is pressure