Physics Fundamentals
2nd Edition
ISBN: 9780971313453
Author: Vincent P. Coletta
Publisher: PHYSICS CURRICULUM+INSTRUCT.INC.
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Chapter 5, Problem 4Q
To determine
Whether the book would slide sooner if the book lies flat or not.
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A rectangular block twice as high as it is wide is resting on a board. The coefficient of static friction between board and incline is 0.63. If the board’s inclination angle is gradually increased, will the block first tip over or first begin sliding?
If mass of box is 50 kg,force P =100 N, and coefficient of friction =0.3,Does the box will tip or
not? And does the box will slip or not?
P = 100 N
60°
0.5 m
1 m
mass=50 kg
us=0.3
A person places a bathroom scale in the center of the floor and stands on the scale with his arms at his sides. If he keeps his arms rigid and quickly moves them up and over his head, he notices the scale reading increase as he brings his arms upward? Why? Then , with his arms over his head, he quickly lowers his arms to his side, How does the scale reading change and why?
Chapter 5 Solutions
Physics Fundamentals
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- A cubical box is filled with sand and weighs 890 N. We wish to “roll" the box by pushing horizontally on one of the upper edges. What minimum coefficient of static friction between box and floor is required?arrow_forwardA 12m long post is bolted to the wall on its left end. It's right end is held horizontal by a wire that is attached to the wall, making a 35 degree angle with the post. If the post is 13 kg, what is the tension in the wire?arrow_forwarda 8-53.. A lantern of weight W is suspended at the end horizontal bar of weight w and length L that is supported by a cable that makes an angle with the side of a vertical wall. Assume the weight of the bar is at its center. (a) Derive an equation for the tension in the cable. (b) Calculate the tension in the cable for a bar of weight 28 N and length 1.5 m, plus a lantern of weight 85 N, and the cable making a 37° angle to the vertical. 40² Darrow_forward
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