Prove that newton's second law of motion is the real law
State and prove law of conservation of linear momentum
Friction is a necessary evil.Explain
State and prove the conservation of angular momentum.
A particle of mass m moves with constant speed v on a circular path of radius r. Find the magnitude of average force on it in half revolution.
Two balls A and B are thrown simultaneously ,A vertically upwards with a speed of 20m/s from ground,and B vetically downwards from a height of 40 m with the same seed and along the same line of motion . At what points do the two balls collide ?
A cricket ball of mass 150g is moving with a velocity of 12m/s and is hit by a bat, so that the ball is turned back with a velocity of 20m/s. The force of the blow acts for 0.01s on the ball. Find the average force exerted by the bat on the ball.
what are the limitations of dimensional analysis?
A machine gun has a mass of 20kg. It fires 30g bullets at the rate of 400 bullets per second with a speed of 400 m/s. What force must be applied to the gun to keep it in position ?
Prove that newton's second law of motion is the real law
State and prove law of conservation of linear momentum
Friction is a necessary evil.Explain
State and prove the conservation of angular momentum.
A particle of mass m moves with constant speed v on a circular path of radius r. Find the magnitude of average force on it in half revolution.
Two balls A and B are thrown simultaneously ,A vertically upwards with a speed of 20m/s from ground,and B vetically downwards from a height of 40 m with the same seed and along the same line of motion . At what points do the two balls collide ?
A cricket ball of mass 150g is moving with a velocity of 12m/s and is hit by a bat, so that the ball is turned back with a velocity of 20m/s. The force of the blow acts for 0.01s on the ball. Find the average force exerted by the bat on the ball.
what are the limitations of dimensional analysis?
A machine gun has a mass of 20kg. It fires 30g bullets at the rate of 400 bullets per second with a speed of 400 m/s. What force must be applied to the gun to keep it in position ?
28. If pulleys shown in the diagram are smooth and massless and a 1 and a2 are acceleration of blocks of mass 4 kg and 8 kg respectively, then
(a) a1 = a2
(b) a1 = 2a2
(c) 2a1 = a2
(d) a1 = 4a2