First slide

Friction on horizontal surface

Question

A block of weight 100N is lying on a rough horizontal surface. If coefficient of friction $\frac{1}{\sqrt{3}}$ . The least possible force that can move the block is

Moderate

A

$\frac{100}{\sqrt{3}} N$
B

$100 \sqrt{3} N$
C

$50 \sqrt{3} N$
D

50N

Solution

$F = \frac{μ_{s} mg}{\sqrt{{μ_{s}}^{2} + 1}}$

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