College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
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Textbook Question
Chapter 9, Problem 24PE
If you used an ideal pulley of the type shown in Figure 9.26(a) to support a car engine of mass 115 kg, (a) What would be the tension in the rope? (b) What force must the ceiling supply, assuming you pull straight down on the rope? Neglect the pulley system's mass.
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Suppose you use an ideal pulley of the type shown in image (a) in the figure below to support a car engine of mass 100 kg.
MA = 2
MA = 3
MA = 4
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(b)
(c)
(a) What would be the tension in newtons in the rope?
(b) What force in newtons must the ceiling supply, assuming you pull straight down on the rope? Neglect the pulley system's
mass.
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Additional Materials
O Reading
A hungry bear weighing 720 N walks out on a beam in an attempt to retrieve a basket of food
hanging at the end of the beam. The beam is uniform, weighs 220 N, and is 9 m long; the
basket weighs 82 N. If the wire can withstand a maximum tension of 958 N, what is the
maximum distance x that the bear can walk before the wire breaks?
60.0°
Goodies
Note: final answer with zero decimal place.
A lightweight rope is wrapped around a 1780-N drum, passes over a frictionless pulley, and is attached to a weight W (see figure). The coefficient of friction between the drum and the surfaces is 0.50. Determine the maximum amount of weight that can be supported by this arrangement.
Chapter 9 Solutions
College Physics
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