EASY
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IMPORTANT
Earn 100

A body of mass m1 is connected with another body of mass m2 with a massless string and pulled with force F. Find the acceleration of the system and tension in the string.

Important Questions on Laws of Motion

EASY
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IMPORTANT

Find the value of T1 and T2 in the given arrangement.

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IMPORTANT
What is the frictional force produced by the road if a force of 20 N is given to a block of mass 2 kg produces an acceleration of 5 m s2 ?
MEDIUM
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IMPORTANT
Draw the free body diagram of a car on a banked road.
MEDIUM
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IMPORTANT
Can a single isolated force exist in nature? Give reason.
MEDIUM
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IMPORTANT
A bullet of mass 10 g is fired from the gun of mass 1 kg with a speed of 200 m s-1. What is the recoil velocity of the gun?
HARD
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IMPORTANT

The mass of an elevator is 800 kg. Calculate the magnitude of tension produced in the cable of the elevator when

(i) It is stationary.

(ii) It is ascending with an acceleration of 4 m s-2.

(iii) It is descending with same acceleration. (Take g=10 m s-2)

HARD
NEET
IMPORTANT
A rigid body of mass 20 kg is kept on a trolley. The coefficient of friction between the body and the trolley is 0.2. If the trolley starts to move with an acceleration of 1 m s-2, then will the body leave the surface of the trolley? Explain. (Take g=9.8 m s-2.)
EASY
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IMPORTANT

(i) What are impulsive forces? Give two examples.

(ii) How can we measure impulse from force-time graph?

(iii) Write SI unit of impulse.