Question

if normal force is doubled , what happens to friction ?​

Answer 1

Answer:

The coefficient of friction is a property of the two surfaces in contact. If we double the normal force, we double the amount of friction, but the coefficient of friction is the same, since the nature of the two surfaces in contact has not changed.

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Answer 2

Answer:

${ \huge{ \underline{ \pmb{ \sf{Required \: Answer:}}}}}$

If normal force is doubled, then friction also becomes double.

As We know that,

Friction is directly proportional to normal force

• f ∝ N

${ \implies{ \sf{ \frac{ f_{1} }{ f_{2}} = \frac{N_{1}}{ N_{2}}...(1) }}}$

here,

• f1 = f1,
• N1 = N1,
• f2 = ?
• N2 = 2N1

From(1),

${ \sf{ f_{2} = f_{1} \bigg( \frac{N _{2}}{ N_{1}} \bigg) }} \\ \\ \implies { \sf{ f_{2} = f_{1} \bigg( \frac{2N _{1}}{ N_{1}} \bigg) }}$

$\therefore{ \sf{ f_{1} = 2 f_{1} }}$

Therefore,

If normal force is doubled Then frictional force Also Doubled.