SATHEE: Laws Of Motion Question 56

Laws Of Motion Question 56

Question: A body of mass m rests on horizontal surface. The coefficient of friction between the body and the surface is $μ .$ If the mass is pulled by a force P, the limiting friction between body and surface will be [BHU 2004]

Options:

A) $μ m g$

B) $μ [m g + (\frac{P}{2})]$

C) $μ [m g - (\frac{P}{2})]$

D) $μ [m g - (\frac{\sqrt{3} P}{2})]$

Show Answer

Answer:

Correct Answer: C

Solution:

Normal reaction $R = m g - P \sin 30^{o}$

$= m g - \frac{P}{2}$

Limiting friction between body and surface is given by, $F = μ R = μ (m g - \frac{P}{2})$ .

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Laws Of Motion Question 56

Question: A body of mass m rests on horizontal surface. The coefficient of friction between the body and the surface is μ. If the mass is pulled by a force P, the limiting friction between body and surface will be [BHU 2004]

Options:

Answer:

Solution:

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Question: A body of mass m rests on horizontal surface. The coefficient of friction between the body and the surface is $μ .$ If the mass is pulled by a force P, the limiting friction between body and surface will be [BHU 2004]