Calculate the acceleration of the system

Reference no: EM1315234

Q1. Two crates, of mass m1 = 45 kg and m2 = 115 kg, are in contact and at rest on a horizontal surface. A 620 N force is exerted on the 45 kg crate. The coefficient of kinetic friction is 0.15.

(a) Calculate the acceleration of the system.(b) Calculate the force that each crate exerts on the other.(c) Repeat with the crates reversed.

Q2. A 3.80 m-long, 430 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 66.0 kg construction worker stands at the far end of the beam. What is the magnitude of torque about the point where the beam is bolted into place?

Reference no: EM1315234

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