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A body of mass 8 kg is suspended through two light springs X and Y connected in series as shown in figure. The readings of X and Y are:

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Important Questions on Newton's Laws of Motion

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11th West Bengal Board
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 6 - Newton's Laws of Motion>EXERCISE>Q 5
Physical independence of force is a consequence of
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11th West Bengal Board
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 6 - Newton's Laws of Motion>EXERCISE>Q 6
A player caught a cricket ball of mass 150 g moving at the rate of 20 ms-1. If the catching process be completed in 0.1 s, the force of the blow exerted by the ball on the hands of the player is
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11th West Bengal Board
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 6 - Newton's Laws of Motion>EXERCISE>Q 7
A block of mass M is pulled along a horizontal frictionless surface by a rope of mass m. If a force p is applied at the free end of the rope, the force exerted by the rope on the block is
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11th West Bengal Board
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 6 - Newton's Laws of Motion>EXERCISE>Q 8
A ball of mass 0.2 kg is thrown vertically upwards by applying a force by hand. If the hand moves 0.2 m while applying a force and the ball goes upto 2 m height further, find the magnitude of the force. Consider g=10 ms-2
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 6 - Newton's Laws of Motion>EXERCISE>Q 9
A ball of mass 10 g hits a hard surface vertically with a speed of 5 m/s and rebounds with the same speed. The ball remains in contact with the surface for 0.01 sec., the average force exerted by the surface on the ball is 
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 6 - Newton's Laws of Motion>EXERCISE>Q 10
An impulse is applied to a moving object with a force at an angle 20° w.r.t. the velocity vector. The angle between the impulse vector and the change in momentum vector is:
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11th West Bengal Board
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 6 - Newton's Laws of Motion>EXERCISE>Q 11
A bullet of mass m and velocity v is fired into a block of mass M and sticks to it. The final velocity would be
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11th West Bengal Board
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 6 - Newton's Laws of Motion>EXERCISE>Q 12
A force vector applied on a mass is represented as F→=6i^-8j^+10k^ and accelerates with 1 m s-2. What will be the mass of the body?