A block pressed against the vertical wall is in equilibrium. The minimum coefficient of friction is:-
$0.4$
$0.2$
$0.5$
none of these
$\mu m g \leq m g-\frac{m g}{2}$
$\mu_{\min }=\frac{1}{2}$
A uniform chain of $6\, m$ length is placed on a table such that a part of its length is hanging over the edge of the table. The system is at rest. The co-efficient of static friction between the chain and the surface of the table is $0.5$, the maximum length of the chain hanging from the table is…….$m.$
Static friction between two surfaces
The coefficient of static friction between a wooden block of mass $0.5\, kg$ and a vertical rough wall is $0.2$ The magnitude of horizontal force that should be applied on the block to keep it adhere to the wall will be $N$ $\left[ g =10\, ms ^{-2}\right]$
A heavy uniform chain lies on a horizontal table-top. If the coefficient of friction between the chain and table surface is $0.25$, then the maximum fraction of length of the chain, that can hang over one edge of the table is …… $\%$
What is the maximum value of the force $F$ such that the block shown in the arrangement, does not move …….. $N$
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