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Question
Two blocks A and B of masses 3m and m respectively are connected by a massless and
inextensible string. The whole system is suspended by a massless spring as shown in figure. The magnitudes of acceleration of A and B immediately after the string is cut, are respectively
A.
B.
C.
D.
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- 1)
A bus moving at a speed of 24 m/s begins to slow at a rate of 3 m/s each second. How far does it go before stopping?
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A 60 kg man stands in contact against the inner wall of a hollow cylindrical drum of radius 4m rotating about its vertical axis with 180 rev./min. The coefficient of friction between the wall and his clothing is 0.20. Find the minimum rotational speed of the cylinder to enable the man to remain stuck to the wall (without falling) when the floor is suddenly removed? Assume g = 10
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Which of the following is the correct expression for maximum possible speed of a caron a banked road?
- 4)In the equation of motion v = u + at, u represents ____________.
- 5)Calculate the acceleration of the block and trolly system shown in the figure. The coefficient of kinetic friction between the trolly and the surface is 0.05. ( g=10m/s², mass of the string is negligible and no other friction exists).
- 6)A horizontal force 10 N is applied to a block A as shown in figure. The mass of blocks A and B are 2kg and 3kg, respectively. The blocks slide over a frictionless surface. The force exerted by block A on block B is:
- 7)A football player is moving southward and suddenly turns eastward with the same speed to avoid an opponent. The force that acts in the player while turning is :
- 8)The force 'F' acting on a particle of mass 'm' is indicated by the force-time graph shown below. The change in momentum of the particle over the time interval from zero to 8 s is :-
- 9)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'?
- 10)Calculate the maximum acceleration of a moving car so that a body lying on the floor of the car remains stationary. The coefficient of static friction between the body and the floor is 0.15 (g=10
).
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Similar Questions
- 1)
A bus moving at a speed of 24 m/s begins to slow at a rate of 3 m/s each second. How far does it go before stopping?
- 2)
A 60 kg man stands in contact against the inner wall of a hollow cylindrical drum of radius 4m rotating about its vertical axis with 180 rev./min. The coefficient of friction between the wall and his clothing is 0.20. Find the minimum rotational speed of the cylinder to enable the man to remain stuck to the wall (without falling) when the floor is suddenly removed? Assume g = 10
- 3)
Which of the following is the correct expression for maximum possible speed of a caron a banked road?
- 4)In the equation of motion v = u + at, u represents ____________.
- 5)Calculate the acceleration of the block and trolly system shown in the figure. The coefficient of kinetic friction between the trolly and the surface is 0.05. ( g=10m/s², mass of the string is negligible and no other friction exists).
- 6)A horizontal force 10 N is applied to a block A as shown in figure. The mass of blocks A and B are 2kg and 3kg, respectively. The blocks slide over a frictionless surface. The force exerted by block A on block B is:
- 7)A football player is moving southward and suddenly turns eastward with the same speed to avoid an opponent. The force that acts in the player while turning is :
- 8)The force 'F' acting on a particle of mass 'm' is indicated by the force-time graph shown below. The change in momentum of the particle over the time interval from zero to 8 s is :-
- 9)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'?
- 10)Calculate the maximum acceleration of a moving car so that a body lying on the floor of the car remains stationary. The coefficient of static friction between the body and the floor is 0.15 (g=10).