Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 5, Problem 96P
To determine
To Find:The minimum radius of curvature of the curve and at what angle should the road be banked.
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Question Info and Solutions
Blocks A and B of mass 5 kg and 10 kg respectively are placed on a Smooth inclined plane of Inclination 30, as shown. Block A
and B are subjected to forces 5 N And 50 N respectively along the incline, as shown. The coefficient of friction between A andBis
0.50 find the frictional force between A and B in N is: (g= 10 ms
SOH
300
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Solution
Fs=Static frictional force umg cos 30
(0.5) (5) (10) cos 30
21.6 N
Let a be the acceleration of both the blocks along
5.27 PM
Two blocks our positioned on surfaces, Each inclined
at the same angle at 41.1° with respect to the
horizontal. The blocks are connected by a rope
which rests on a frictionless pulley at the top of the
inclines a Sean, so the blocks can slide together. The
mass of the black block is 7.35 kg, and the coefficient
of kinetic friction for both blocks and inclines is
0.290. Assume static friction has been overcome and
that everything can slide. What must be the mass of
the white block if both blocks are to slide to the right
at an acceleration of 1.5 m/s^2?
Bill gets a job delivering pizzas. The pizza companymakes him mount a sign on the roof of his car. Thefrontal area of the sign is A = 0.612 ft2, and he estimatesthe drag coefficient to be CD = 0.94 at nearly all air speeds.Estimate how much additional money it costs Bill per year infuel to drive with the sign on his roof compared to withoutthe sign. Use the following additional information: He drivesabout 10,000 miles per year at an average speed of 45 mph.The overall car efficiency is 0.332, rfuel = 50.2 lbm/ft3, andthe heating value of the fuel is 1.53 * 107 ft . lbf/lbm. Thefuel costs $3.50 per gallon. Use standard air properties. Becareful with unit conversions.
Chapter 5 Solutions
Physics for Scientists and Engineers
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