Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 5, Problem 83P
(a)
To determine
The magnitude and direction of the force.
(b)
To determine
The force exerted by girl on the boy and direction of force.
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Two spheres A and B are placed in the arrangement shown below.
If mA = 4m and mB = 8m, where on the dashed line should a third sphere C of mass 8m be placed so that the net force on it is zero?
(b) If the distance between the two spheres A and B is 500 cm, find the location for the third sphere C so that the net force on it is zero. cm to the right of sphere B
*answer for b*
The block at point A is released from rest on a smooth track, which is onequadrant of a circle of radius 5m. It continues to move along a rough surfacefrom point B to E and acquires a velocity of 8.6 m/s at point C. If its velocity at E is 2.25 m/s, calculate:
a) velocity at Bb) the coefficient of friction between the block and the surface B to Ec) mass of the block, if the loss in KE between points D to C is 24.05 Jd) velocity at De) distance DE
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Disturbed by speeding cars outside his workplace, Nobel laureate Arthur Holly Compton designed a speed bump (called the "Holly hump") and had it installed. Suppose a 1800-kg car passes over a
hump in a roadway that follows the arc of a circle of radius 20.6 m as in the figure below.
(a) If the car travels at 22.0 km/h what force does the road exert on the car as the car passes the highest point of the hump?
magnitude
N.
direction
--Select-v
(b) What is the maximum speed the car can have without losing contact with the road as it passes this highest point?
km/h
Chapter 5 Solutions
Physics for Scientists and Engineers
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