A worker wants to turn over a uniform 1300- N rectangular crate by pulling at 53

Question

A worker wants to turn over a uniform 1300-Nrectangular crate by pulling at 53.0 ? on one of its vertical sides (the figure (Figure 1) ). The floor is rough enough to prevent the crate from slipping. A worker wants to turn over a uniform 1300-Nrectangular crate by pulling at 53.0 ? on one of its vertical sides (the figure (Figure 1) ). The floor is rough enough to prevent the crate from slipping. A worker wants to turn over a uniform 1300-Nrectangular crate by pulling at 53.0 ? on one of its vertical sides (the figure (Figure 1) ). The floor is rough enough to prevent the crate from slipping. A worker wants to turn over a uniform 1300-Nrectangular crate by pulling at 53.0 ? on one of its vertical sides (the figure (Figure 1) ). The floor is rough enough to prevent the crate from slipping. Part A What pull is needed to just start the crate to tip? Part B How hard does the floor push on the crate?
Part C Find the friction force on the crate.
Part D What is the minimum coefficient of static friction needed to prevent the crate from slipping on the floor? ?s = 0.472 SubmitMy AnswersGive Up Correct Provide FeedbackContinue Part A What pull is needed to just start the crate to tip? Part B How hard does the floor push on the crate?
Part C Find the friction force on the crate.
Part D What is the minimum coefficient of static friction needed to prevent the crate from slipping on the floor? ?s = 0.472 SubmitMy AnswersGive Up Correct Part A What pull is needed to just start the crate to tip? Part B How hard does the floor push on the crate?
Part C Find the friction force on the crate.
Part D What is the minimum coefficient of static friction needed to prevent the crate from slipping on the floor? ?s = 0.472 SubmitMy AnswersGive Up Correct Part A What pull is needed to just start the crate to tip? Part B How hard does the floor push on the crate?
Part C Find the friction force on the crate.
Part D What is the minimum coefficient of static friction needed to prevent the crate from slipping on the floor? ?s = 0.472 SubmitMy AnswersGive Up Correct Part A What pull is needed to just start the crate to tip? Part B Part A What pull is needed to just start the crate to tip? Part B How hard does the floor push on the crate?
How hard does the floor push on the crate?
Part C Find the friction force on the crate.
Part C Find the friction force on the crate.
Part D What is the minimum coefficient of static friction needed to prevent the crate from slipping on the floor? ?s = 0.472 SubmitMy AnswersGive Up Correct Part D What is the minimum coefficient of static friction needed to prevent the crate from slipping on the floor? ?s = 0.472 SubmitMy AnswersGive Up Correct ?s = 0.472 ?s = 0.472 0.472 SubmitMy AnswersGive Up Correct Correct Correct Provide FeedbackContinue
A worker wants to turn over a uniform 1300-Nrectangular crate by pulling at 53.0 ? on one of its vertical sides (the figure (Figure 1) ). The floor is rough enough to prevent the crate from slipping. Part A What pull is needed to just start the crate to tip? Part B How hard does the floor push on the crate?
Part C Find the friction force on the crate.
Part D What is the minimum coefficient of static friction needed to prevent the crate from slipping on the floor? ?s = 0.472 SubmitMy AnswersGive Up Correct Provide FeedbackContinue

Explanation / Answer

moment due to horizontal component of the pull Fsin(53) must overcome weight to be able to tip

take moments about the left bottom corner about which tipping will takes place

Fsin(53)*1.5 = mg*1.1

F = 1193.7 N

vertical compnent of the pull = Fcos(53)

How hard does the floor push on the crate?

ANS:normal reaction N= Fcos(53)+mg = 2018.386 N

Friction force must balance horizontal pull for it to be not slipping

Friction force = Fsin(53) = 953.33 N

us*N = 953.33

us = .472

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