What is the maximum value of the force F...

What is the maximum value of the force F such that the block shown in the arrangement, does not move?

20N

10N

12N

15N

Text Solution

Verified by Experts

The correct Answer is:

`=N=mg+F sin 60=sqrt(3)xx10+(Fsqrt(3))/2.....(i)`
`Fcos 60=mu N ....(ii)`
`rArr F/2=1/(2sqrt(3))xx(10sqrt(3)+(Fsqrt(3))/2)`
`rArr F/2=5+F/4`
`rArr F/4=5 rArr F=20 N`

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