I need help with this question please Q20. The 74-kg man pushes on the 143-kg crate with a horizontal force F. If thecoefficient of kinetic friction between the crate and the surface is uk = 0.12, and thecoefficient of static friction between the man's shoes and the surface is us = 0.83,what is the greatest acceleration (in m/s2) the man can give the crate? Hint, this iswhen the man himself is on the verge of slipping. Please pay attention: the numbersmay change since they are randomized. Your answer must include 2 places after thedecimal point. Take,%3Dg = 9.81 m/s².Your Answer:Answer

Answered: oefficient of kinetic friction between…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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I need help with this question please

Q20. The 74-kg man pushes on the 143-kg crate with a horizontal force F. If the
coefficient of kinetic friction between the crate and the surface is uk = 0.12, and the
coefficient of static friction between the man's shoes and the surface is us = 0.83,
what is the greatest acceleration (in m/s2) the man can give the crate? Hint, this is
when the man himself is on the verge of slipping. Please pay attention: the numbers
may change since they are randomized. Your answer must include 2 places after the
decimal point. Take,
%3D
g = 9.81 m/s².
Your Answer:
Answer

Expert Solution

Step 1: Introduction

the man is trying to move the block which is hevier than himself. here the concept of the statoc friiction and kinectin friction comes in to place

kinectic friction corefficunt is less than the sstaic friction value and hence when the body moves it would require less force for the acceleration than when it wsas not moving. so we have to see if we want to move the block than we need to take care that the friction should be kinetic and for that the block should be in verge of the movemt so that we can consider thekinectic friction

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