AIPMT 2015 Cancelled Paper | Laws of Motion Question 21 | Physics

AIPMT 2015 Cancelled Paper

MCQ (Single Correct Answer)

-1

A block A of mass m₁ rests on a horizontal table. A light string connected to it passes over a frictionless pully at the edge of table and from its other end another block B of mass m₂ is suspended. The coefficient of kinetic friction between the block and the table is $$\mu $$_k. When the block A is sliding on the table, the tension in the string is

$${{{m_1}{m_2}(1 + {\mu _k})g} \over {({m_1} + {m_2})}}$$

$${{{m_1}{m_2}(1 - {\mu _k})g} \over {({m_1} + {m_2})}}$$

$${{\left( {{m_2} + {\mu _k}{m_1}} \right)g} \over {\left( {{m_1} + {m_2}} \right)}}$$

$${{\left( {{m_2} - {\mu _k}{m_1}} \right)g} \over {\left( {{m_1} + {m_2}} \right)}}$$

AIPMT 2014

MCQ (Single Correct Answer)

-1

A balloon with mass m is descending down with an acceleration a (where a < g). How much mass should be removed from it so that it starts moving up with an acceleration a ?

$${{2ma} \over {g + a}}$$

$${{2ma} \over {g - a}}$$

$${{ma} \over {g + a}}$$

$${{ma} \over {g - a}}$$

AIPMT 2014

MCQ (Single Correct Answer)

-1

A system consists of three masses m₁, m₂ and m₃ connected by a string passing over a pulley P. The mass m₁ hangs freely and m₂ and m₃ are on a rough horizontal table (the coefficient of friction = $$\mu $$). The pulley is frictionless and of negligible mass. The downward acceleration of mass m₁ is (Assume m₁ = m₂ = m₃ = m)

AIPMT 2014 Physics - Laws of Motion Question 22 English

AIPMT 2014 Physics - Laws of Motion Question 22 English

$${{g\left( {1 - g\mu } \right)} \over 9}$$

$${{2g\mu } \over 3}$$

$${{g\left( {1 - 2\mu } \right)} \over 3}$$

$${{g\left( {1 - 2\mu } \right)} \over 2}$$

NEET 2013 (Karnataka)

MCQ (Single Correct Answer)

-1

A car is moving in a circular horizontal track of radius 10 m with a constant speed of 10 m/s. A bob is suspended from the roof of the car by a light wire of length 1.0 m. The angle made by the wire with the vertical is

$${\pi \over 3}$$

$${\pi \over 6}$$

$${\pi \over 4}$$

0^o

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