PAL Problem Set M2 (Newton’s Laws Practice Problems) - Edubirdie

University:
University of Pennsylvania
Course:
PHYS 0101 | General Physics: Mechanics, Heat and Sound
Academic year:

2024
Views:

3

Pages:

1
Author:

numcore694sxk

PAL Problem Set M2 (Newton’s Laws Practice Problems) Always explain your answers and show your work. Problem 1 - Consider the system of two boxes shown in the figure. Box A is being pulled from underneath box A. A. B. C. D. Draw the free body diagrams for blocks A and B. Which of these forces are action/reaction pairs? What is the acceleration of block B? What is the tension on the string? Problem 2 - A 20-cm-long spring is attached to a wall. When pulled horizontally with a force of 100 N, the spring stretches to a length of 22 cm. A. What is the value of the spring constant? B. The same spring is now suspended from a hook and a 15 kg block is attached to the bottom end. How much is the spring stretched? Problem 3 - A 64 kg woman stands on a very light, rigid board that rests on a bathroom scale at each end. A. What is the reading on each scale? B. What would the reading on each scale be if the board she is standing on has a mass of 10 kg?

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