1. Blocks B has a mass of 20 kg and block C has a mass of 15 kg. The coefficient of static friction at the contacting surfaces is 0.2. Block A is suspended by a rope that passes over a fixed cylinder and is attached to block B. The coefficient of static friction between the rope and the cylinder is 0.25. What is the largest mass block A can have without causing block B to slip the left? 20

1. Blocks B has a mass of 20 kg and block C has a mass of 15 kg. The coefficient of static friction at the contacting surfaces is 0.2. Block A is suspended by a rope that passes over a fixed cylinder and is attached to block B. The coefficient of static friction between the rope and the cylinder is 0.25. What is the largest mass block A can have without causing block B to slip the left? 20

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter14: Sheet-pile Walls

Section: Chapter Questions

Problem 14.5P

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Question

1. Blocks B has a mass of 20 kg and block C has a
mass of 15 kg. The coefficient of static friction at
the contacting surfaces is 0.2. Block A is
suspended by a rope that passes over a fixed
cylinder and is attached to block B. The
coefficient of static friction between the rope
and the cylinder is 0.25. What is the largest mass
block A can have without causing block B to slip
the left?
20

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Step 1 Interpretation of data

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Step 2 Free body diagram of A,B and C

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Step 3 Solving forces at C

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Step 4 Solving forces at B

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Step 5 Calculation for the mass of block A

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