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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?

A

20N

B

10N

C

12N

D

15N

Text Solution

Verified by Experts

The correct Answer is:
A
`=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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RESONANCE ENGLISH-NEWTONS LAWS OF MOTION AND FRICTION-Exercise
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  13. A weight w is to be moved from the bottom to the top of an inclined pl...

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  14. In the arrangements shown in the figure there is friction only between...

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  15. Starting form rest, a body slides down a 45^(@) inclined plane in twic...

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  17. A body is projected up along the rough inclined plane from the bottom ...

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  18. A chain of length L is placed on a horizontal surface as shown in figu...

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