PEARSON ETEXT ENGINEERING MECH & STATS
15th Edition
ISBN: 9780137514724
Author: HIBBELER
Publisher: PEARSON
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Q4) Determine whether the 90-kg man can move the uniform box has a mass
140-kg
and show if the box will slip or tip. If the coefficient of static fraction between man'
shoes and the floor is 0.5 and between the box and the floor is 0.2. Assume the man
only exerts a horizontal force on the box.
Concept revolves around friction
The system consists of the two smooth spheres, each
weighing 3 lb and connected by a light spring, and
the two bars of negligible weight hinged freely at
their ends and hanging in the vertical plane. The
spheres are confined to slide in the smooth horizontal
guide. If a horizontal force F = 10 lb is applied to the
one bar at the position shown, what is the accelera-
tion of the center C of the spring? Why does the re-
sult not depend on the dimension b?
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