PHYSICS F/SCI.+ENGRS.,STAND.-W/ACCESS
6th Edition
ISBN: 9781429206099
Author: Tipler
Publisher: MAC HIGHER
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Chapter 7, Problem 29P
(a)
To determine
The force associated with the potential energy.
(b)
To determine
The position at which object is in equilibrium.
(c)
To determine
The position at which object is in stable equilibrium and unstable equilibrium.
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A body with mass 0.40 kg moves in one dimension according to a potential of theform U(x) = A/x3-B/x ,
where A = 4.0 Jm3 abd B = 3.0 Jm, and we take x > 0.
(a) Sketch the form of the potential.(b) Find the force F resulting from this potential as a function of position x.(c) Find the equilibrium position(s) and determine whether they are stable or unstable.(d) If the speed of the body at x = 4.0m is v = 3.9 ms−1, what is the speed atx = 1.5 m?(e) Explain briefly what type(s) of motion are possible in this potential if the totalenergy E = 3.0 J
A 2.28 kg block is pushed 1.69 m up a ver-
tical wall with constant speed by a constant
force of magnitude F applied at an angle of
60.8° with the horizontal.
The acceleration of gravity is 9.8 m/s².
60.8°
F
2.28 kg
If the coefficient of kinetic friction between
the block and wall is 0.631, find the work done
by F.
Answer in units of J. Answer in units of J.
Your response...
i
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Chapter 7 Solutions
PHYSICS F/SCI.+ENGRS.,STAND.-W/ACCESS
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