PROBLEM 13: The coefficients of friction are = 0.40 between all surfaces of contact. Determine the force P required in N to start the 30-kg block moving if cable AB is attached as shown. P 20 kg 30 kg A B

PROBLEM 13: The coefficients of friction are = 0.40 between all surfaces of contact. Determine the force P required in N to start the 30-kg block moving if cable AB is attached as shown. P 20 kg 30 kg A B

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

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter4: Coplanar Equilibrium Analysis

Section: Chapter Questions

Problem 4.170RP: The 320-lb homogeneous spool is placed on the inclined surface. Determine the vertical force P that...

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Question

Solve the following problem (NOTE: Use any reasonable DATA not given in the problem.)

PROBLEM 13:
The coefficients of friction are = 0.40 between all surfaces of contact.
Determine the force P required in N to start the 30-kg block moving if cable AB is attached as shown.
20 kg
30 kg
A
B

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Step 1: Determine the given variable

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Step 2: Draw the free body diagram of the block A

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Step 3: Calculate the tension in the cable AB

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Step 4: Draw the free body diagram of the block B

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Step 5: Calculate the required force P to start 30 kg block moving

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