SATHEE: Laws Of Motion Question 103

Laws Of Motion Question 103

Question: A body B lies on a smooth horizontal table and another body A is placed on B. The coefficient of friction between A and B is $μ$ . What acceleration given to B will cause slipping to occur between A and B

Options:

A) $μ g$

B) $g / μ$

C) $μ / g$

D) $\sqrt{μ g}$

Show Answer

Answer:

Correct Answer: A

Solution:

There is no friction between the body B and surface of the table. If the body B is pulled with force F then $F = (m_{A} + m_{B}) a$ Due to this force upper body A will feel the pseudo force in a backward direction. $f = m_{A} \times a$ But due to friction between Aand B, body will not move. The body A will start moving when pseudo force is more than friction force.i.e. for slipping, $m_{A} a = μ m_{A} g$

$∴$ $a = μ g$

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Laws Of Motion Question 103

Question: A body B lies on a smooth horizontal table and another body A is placed on B. The coefficient of friction between A and B is μ . What acceleration given to B will cause slipping to occur between A and B

Options:

Answer:

Solution:

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Question: A body B lies on a smooth horizontal table and another body A is placed on B. The coefficient of friction between A and B is $μ$ . What acceleration given to B will cause slipping to occur between A and B