COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 5, Problem 59QAP
To determine
(a)
Tension on the string when the metal washer is at the bottom of the circular path.
To determine
(b)
Tension on the string when the metal washer is at the top of the circular path.
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8-
A ball of mass m = 0.4 kg moves in a vertical circular path on a string L= 1 m. If its speed is 7 m/s at the top of the circle, what is the tension in the string at that point?
O A) 15.68 N
O B) 3.92 N
O 9 ON
O D 23.52 N
O Đ 35.28 N
Q1) Circular motionA carnival ride has people stand inside a vertical cylinder with theirbacks to the wall. The cylinder starts spinning counterclockwise and theriders find that they are “stuck” to the wall and don’t slide down, evenwhen the floor is removed.The ride has a radius of r. The person has a mass of m and is movingwith a constant speed of v. The coefficient of static friction between theperson and the wall is μs , and kinetic friction μk. The person is onlytouching the wall, not touching the floor.a) Draw a free body diagram for the person when they are on the left-hand side, as shown.Clearly label all forces. Use the notation used in class.b) What is the magnitude and direction of the acceleration of the person?Give your answer in terms of variables only (r, v, m, μs, μk, and g)c) What is the magnitude of the normal force of the wall on the person?Solve this problem using Newton’s 2nd Law. Show all your work.Give your answer in terms of variables only (r, v, m, μs, μk, and…
A 23 kg box of garbage is connected by a massless string to a post on a frictionless table. The string is 1.5 m long. There is no appreciable friction between the post and the string. If the tension in the string is 71 N while the garbage slides in a uniform circle toward a disposal bin, how long does it take for the box to make one complete revolution?
a) 3.5 s
b) 2.2 s
c) 1.2 s
d) 4.4 s
e) 5.4 s
Chapter 5 Solutions
COLLEGE PHYSICS
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