Wile E. Coyote prepares a trap to kill (I hope so, too) Road Runner for good. What is the minimum and maximum pulling force of Wile E. Coyote on the rope to hold the 1-ton steel cylinder as shown while waiting for Road Runner to pass through? Show your answers in kN. The angle of friction between the pulley and the rope is 27°. Note: The shaded area of the pulley is 30 percent of the total area.

Wile E. Coyote prepares a trap to kill (I hope so, too) Road Runner for good. What is the minimum and maximum pulling force of Wile E. Coyote on the rope to hold the 1-ton steel cylinder as shown while waiting for Road Runner to pass through? Show your answers in kN. The angle of friction between the pulley and the rope is 27°. Note: The shaded area of the pulley is 30 percent of the total area.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter6: Applications Of Newton's Laws

Section: Chapter Questions

Problem 123AP: Two blocks connected by a string are pulled across a horizontal surface by a force applied to one of...

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Consider the 52.0-kg mountain climber shown below. (a) Find the tension in the rope and the force that the mountain climber must exert with her feet on the vertical rock face to remain stationary. Assume that the force is exerted parallel to her legs. Also, assume negligible force exerted by her arms. (b) What is the minimum coefficient of friction between her shoes and the cliff?
Ina traction setup a broken bone, with pulleys and rope available, how might we be able to Increase the force along the tibia using the weight? (See Figure 4.30) (Note that the tibia is the shin bone shown in this image.) Figure 4.30 A leg is suspended by a traction system in which wires used to transmit forces. Frictionless pulleys crw.ge the direction of the force T without changing Its magnitude.
If an object is to rest o an incline without slipping, then friction must equal the component of the weight of the object parallel to the incline. This requires greater and greater friction for steeper slopes. Show that the maximum angle of an incline above the horizontal for which an object will not slide down is =tan1s . You may use the result of the previous problem. Assume that a=0and that static friction has reached its maximum value.
A history book is lying on top of a physics book on a desk, as shown below a free-body diagram is also shown. The history and physics books weigh 14 N and 18 N, respectively. Identify each force on each book with a double subscript notation (for instance, the contact force of the history book pressing against physics book can be described as F HP), and determine the value of each of these forces, explaining the process used.
As shown below, if M=6.0kg, what is the tension in the connecting string? The pulley and all surfaces are frictionless.
Check Your Understanding Determine a general formula in terms of and for calculating the tension in the string for the Atwood machine shown above.
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Two muscles in the back of the leg pull upward on the Achilles tendon, as shown below. (These muscles are called the mediaI and lateral heads of the gastrocnemius muscle.) Find the magnitude and direction of the total force on the Achilles tendon. What type of movement could be caused by this force?
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Suppose you use an ideal pulley of the top shown in figure 5.18(a) Play to support a car engine of mass 150 kg. (a) what would the tension in the rope be? n? what force must the ceiling supply ,assuming you pull straight down on the rope ? Neglect the pulley systems mass. n (upward) ?
A bodybuilder holds a dumbbell of weight Wd. His arm is horizontal and weighs 34 N. The deltoid muscle is assumed to be the only muscle acting and is attached to the arm as shown. The maximum force M→ that the deltoid muscle can supply has a magnitude of 2976 N. The distances that locate where the various forces act on the arm. What is the weight of the heaviest dumbbell that can be held by the bodybuilder? Note: Express your answer in whole numbers. No unit is required for the final answer.