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The breaking strength of the string conn...

The breaking strength of the string connecting wall and block B is 175 N, find the magnitude of weight of block A for which the system will be stationary. The block B weighs 700 N.
`(g = 10 m//s^(2))`

Text Solution

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FBD of block B `to`

FBD of point in figure `to`

Equating forces in horizontal direction `to`
`Tcos30^(@)=175`
`T=(175xx2)/(sqrt(3))N`
In vertical direction `to`
`Tsin30^(@)=T'`
So, `T'=(175xx2)/(sqrt(2))xx1/2=(175)/(sqrt(3))N`
FBD of block A `to`
So, `T'=W=(175)/(sqrt(3))N`
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