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Class XI Physics Revision Quiz on Laws of Motion 3
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Question 1
A moving body of mass m and velocity 3 km/h collides with a rest body of mass 2m and stick to it. Now the combined mass starts to move. What will be the combined velocity?
Question 2
If we increase kinetic energy of a body 300%, then percent increase in its momentum is
Question 3
A man holds a light rope that passes over a smooth pulley. A bucket filled with gold of equal mass as that he man attached to the other end of the rope. The man starts climbing the rope to get bucket. Then
Question 4
Three cars of which have equal masses 500 kg pulled with a force F. Assume the locomotive friction is negligible.
Find the force between the cars B and C.
Find the force between the cars B and C.
Question 5
Three masses are connected as shown in figure on a horizontal frictionless surface and pulled by a force of 100 N. The tensionsandare in the ratio
Question 6
A force acts on an object having 5 kg mass for about 5 s in the direction of motion. The force-time graph of this body is given below. The impulse of force would be:
Question 7
A 70kg man, standing on the bank of the river, suddenly jumps in a boat with mass 10kg and going with speed 10m/s (X-direction) downstream, perpendicular to its motion. The velocity of man while jumping is 2m/s (Y-direction). Find the final velocity with direction. Assume the velocities of the man (y-axis) and the boat (x-axis) are pointing in the positive direction initially.
Question 8
A body of mass M hits normally a rigid wall with velocity v and bounces back with the same velocity. The impulse experienced by the body is
Question 9
A body of mass 5 kg kept on a rough inclined plane of angle 30o starts sliding with a constant velocity. Then the coefficient of friction is (assume g = 10 m/s2)
Question 10
Two blocks of mass 5 kg and 3 kg are placed side by side on a smooth horizontal surface as shown in the figure. A horizontal force of 40 N is applied on 3 kg block. Then find the normal reaction between the block.
Question 11
If the mechanical system shown below is in static equilibrium then what will be the value of tension T (in N). Assume
Question 12
A block of mass m = 4 kg is placed over a rough inclined plane as shown in figure. The coefficient of friction between the block and the plane is = 0.6. A force F = 10 N is applied on the block at an angle of 30o. The contact force between the block and the plane is
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Aug 21NEET & AIIMS