A 30 lb block is subjected to a force, F = 60 lb as shown below. The block starts from rest. When the block has moved upward 0.5 ft, Point B has moved downward 0.25 ft. Ignore the mass of the pulleys and rope and assume the pulleys are frictionless. Answer the following questions. a. Use the figure provided to label the vertical datum. Include all relevant distances needed to evaluate the pulley system. b. How much work is done by the block? Show your work. Magnitude rounded to 3 sig. fig. Units c. How much work is done by the force, F? Show your work. Magnitude rounded to 3 sig. fig. IInits d. Use the Principle of Work & Energy to determine the final kinetic energy of the block after it has move 0.5 ft. Show your work.

A 30 lb block is subjected to a force, F = 60 lb as shown below. The block starts from rest. When the block has moved upward 0.5 ft, Point B has moved downward 0.25 ft. Ignore the mass of the pulleys and rope and assume the pulleys are frictionless. Answer the following questions. a. Use the figure provided to label the vertical datum. Include all relevant distances needed to evaluate the pulley system. b. How much work is done by the block? Show your work. Magnitude rounded to 3 sig. fig. Units c. How much work is done by the force, F? Show your work. Magnitude rounded to 3 sig. fig. IInits d. Use the Principle of Work & Energy to determine the final kinetic energy of the block after it has move 0.5 ft. Show your work.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.50P: The block of weight W is pulled by the force P inclined at the angle to the horizontal. Find the...

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