College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
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Chapter 5, Problem 8PE
Show that the acceleration of any object down a frictionless incline that makes an angle
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Show that the acceleration of any object down an incline where friction behaves simply (that is, where fk=μkN)fk=μkN) is a=g(sinθ−μkcosθ).a=g(sinθ−μkcosθ). Note that the acceleration is independent of mass and reduces to the expression found in the previous problem when friction becomes negligibly small (μk=0).(μk=0).
A body weighing 2 kg was acted upon by a horizontal force of 3 N. What speed will the body acquire in 5 s in the absence of friction?
The direction of frictional
force is
a. against the weight
b. towards the gravity
C. in favor of the normal force
d. against the motion
e. horizontal to the weight
f. perpendicular to the acceleration
g. towards the ground
Chapter 5 Solutions
College Physics
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