Q1 a ball is dropped from rest at a height of 80 m above

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Reference no: EM13353705

Q1. A ball is dropped from rest at a height of 80 m above the ground.

a. What is its speed as it hits the ground?

b. How long does it take for it to reach the ground?

Q2. A 3.10-m-long, 310 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 73.0 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: EM13353705

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