COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 4, Problem 20QAP
To determine
The reason due to which the American Academy of Pediatrics recommend that all infants sit in rear-facing car seats.
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DOT PRODUCT
●
• Three dogs are pulling on a stick in different
directions. The first dog pulls with force F1 =
(10.01 - 20.4ĵ+ 2.0K)N, the second dog pulls with
force F2 = (-15.01 - 6.2K)N, and the third dog pulls
with force F3 = (5.02 + 12.5ĵ)N. What is the angle
between forces F1 and F2?
• Analyze the beam shown for reactions, shear and bending moment.
Include the sign (+ or -) for final answers with 2 decimals.
P=15 kN
M=25 kN-m
w=7 kN/m
3 m
4 m
4 m
A
B
C
What is the slope of the shear diagram between D and E?
O-7
O +7
O -7/3
O +7/3
O-3
4 m
D
E
Two forces and a couple are applied to the beam in an attempt to lift it.
Replace this force system by an equivalent force-couple system with the force
acting at (a) point A; and (b) point B.
36 kN
20 kN
2 m
3 m
2 m
94 kN - m
-C•
-B
Chapter 4 Solutions
COLLEGE PHYSICS
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- •9:EV %VO 4G N Question 10 The SI unit of coefficient of friction is a. no units b. N/m c. N m/s d. m/Narrow_forwardQuestion P •C W The man in the diagram is trying to move a large box by pushing on it with a force, P. The box weighs W = 250 N and its centre of gravity is located in the centre of the box (point C). Given: The coefficient of static friction between the box and the floor is μs = 0.3 Dimensions: a = 1.8m, b=0.6m, h= 0.9 m We want to know whether the box will move if P = 70 N. Scenario: Box remains stationary First, let us consider the case of the box remaining stationary. Calculate the Friction force and Normal force under this condition. Then consider, how far from the centre line of the box does the normal force act. a. First, calculate the magnitude of the friction force (between box and floor) generated under Scenario. b. Calculate the magnitude of the normal force acting under the box. c. Calculate the location of the normal force - find its horizontal distance from box centre line.arrow_forward01:55 00 all 71% ENG102 MAY 2022_SEAVIEW.pdf - Read-only b). A 3.0 kg block rests on a smooth inclined plane block, (angle of inclination is 30 °). It is connected by a string of negligible mass to a 6.0 kg block hanging over the end of the table, as shown in the diagram below. i). Find the acceleration of each block ii). What is the Tension in the string? Major Topic 6 Blooms Score Designation II 8.arrow_forward
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