Physics II workshop_Part_24

Physics II workshop_Part_24 - 1-D Force Problems 1. A 50 kg...

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50 1-D Force Problems 1. A 50 kg passenger rides in an elevator that starts from rest on the ground floor of a building at t = 0 and rises to the top floor during a 10 sec interval. The acceleration of the elevator as a function of the time is shown in the figure, where positive values of the acceleration mean that it is directed upward. Give the magnitude and direction of the following forces: (a) the maximum force on the passenger from the floor, (b) the minimum force on the passenger from the floor, and (c) the maximium force on the floor from the passenger. 2. A 29.0 kg child, with a 4.50 kg backpack on his back, first stands on a sidewalk and then jumps up into the air. Find the magnitude and direction of the force on the sidewalk from the child when the child is (a) standing still and (b) in the air. Now find the magnitude and direction of the net force on Earth due to the child when the child is (c) standing still and (d) in the air. 3.
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Physics II workshop_Part_24 - 1-D Force Problems 1. A 50 kg...

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