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A block weighing 10kg is at rest on a ho...

A block weighing 10kg is at rest on a horizontal table. The coefficient of static friction between the block and the table is 0.5. If a force acts downward at `60^(@)` with the horizontal, how large can it be without causing the block to move ? `(g=10ms^(-2))`

A

346 N

B

446 N

C

746 N

D

846 N

Text Solution

Verified by Experts

The correct Answer is:
C
`F cos theta=f, f=mu_(s)N, N=mg+F sin theta`
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Knowledge Check

  • A block of mass 1kg is at rest on a horizontal table. The coeficient of static friction between the block and the table is 0.5 . The magnitude of the force acting upward at an angle of 60^(@) from the horizontal that will just start the block moving is.

    A
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    B
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    C
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    D
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    A
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