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A block of mass 10 kg is held at rest a...

A block of mass 10 kg is held at rest against a rough vertical wall `[mu=0.5]` under the action a force F as shown in figure. The minimum value of F required for it is `(g=10m//s^(2))`

A

162.6 N

B

89.7 N

C

42.7 N

D

95.2 N

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  • A block of mass 1 kg is held at rest against a rough vertical surface by pushing by a force F horizontally. The coefficient of friction is 0.5. When

    A
    F = 40 N, friction on the block is 20 N.
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    C
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    D
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