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A uniform chain of mass m and length l hangs on a thread and touches the surface of a table by its lower end. Thread breaks suddenly. Find the force exerted by the table on the chain when half of its length has fallen on the table. The fallen part does not form heap
22
Sep
A uniform chain of mass m and length l hangs on a thread and touches the surface of a table by its lower end. Thread breaks suddenly. Find the force exerted by the table on the chain when half of its length has fallen on the table. The fallen part does not form heap A [...]
A bird is flying towards north with a velocity 40 km/h and a train is moving with velocity 40 km/h towards east. What is the velocity of the bird noted by a man in the train?
22
Sep
A bird is flying towards north with a velocity 40 km/h and a train is moving with velocity 40 km/h towards east. What is the velocity of the bird noted by a man in the train? A bird is flying towards north with a velocity 40 km/h and a train is moving with velocity 40 [...]
A policeman moving on a highway with a speed of 30 km/h fires a bullet at thief’s car speeding away in the same direction with a speed of 192 km/h. If the muzzle speed of the bullet
22
Sep
A policeman moving on a highway with a speed of 30 km/h fires a bullet at thief’s car speeding away in the same direction with a speed of 192 km/h. If the muzzle speed of the bullet A policeman moving on a highway with a speed of 30 km/h fires a bullet at thief's car [...]
Rain is falling vertically with a velocity of 25 m/s. A woman rides a bicycle with a speed of 10 m/s in the north to south direction. What is the direction (angle with vertical) in which she should
22
Sep
Rain is falling vertically with a velocity of 25 m/s. A woman rides a bicycle with a speed of 10 m/s in the north to south direction. What is the direction (angle with vertical) in which she should Rain is falling vertically with a velocity of 25 m/s. A woman rides a bicycle with a [...]
A man swims from a point A on one bank of a river of width 100 m. When he swims perpendicular to the water current, he reaches the other bank 50 m downstream. The angle to the bank
22
Sep
A man swims from a point A on one bank of a river of width 100 m. When he swims perpendicular to the water current, he reaches the other bank 50 m downstream. The angle to the bank A man swims from a point A on one bank of a river of width 100 m. [...]
A mass m1 is connected by a weghtless cable of water, whose mass is m0 at t=0. If the container efects water in downward directiona t a constant rate bkg/s. with a velocity v0 relative to the container, determine the acceleration of m1 as a function of time.
22
Sep
A mass m1 is connected by a weghtless cable of water, whose mass is m0 at t=0. If the container efects water in downward directiona t a constant rate bkg/s. with a velocity v0 relative to the container, determine the acceleration of m1 as a function of time. A mass m1 is connected by a [...]
Ship A is travelling with a velocity of 5 km/h due east. A second ship is heading 30 east of north. What should be the speed of second ship if it is to remain always due north with respect
22
Sep
Ship A is travelling with a velocity of 5 km/h due east. A second ship is heading 30 east of north. What should be the speed of second ship if it is to remain always due north with respect Ship A is travelling with a velocity of 5 km/h due east. A second ship is [...]
A gun fires 40 shots in 1 second with a muzzle velocity of 300 m/s. If mass of each shot is 40 g, find the average impact on the gun.
22
Sep
A gun fires 40 shots in 1 second with a muzzle velocity of 300 m/s. If mass of each shot is 40 g, find the average impact on the gun. A gun fires 40 shots in 1 second with a muzzle velocity of 300 m/s. If mass of each shot is 40 g find the [...]
Rain is falling vertically downwards with a speed of 4 km/h. A girl moves on a straight road with a velocity of 3 km/h. The apparent velocity of rain with respect to the girl is
22
Sep
Rain is falling vertically downwards with a speed of 4 km/h. A girl moves on a straight road with a velocity of 3 km/h. The apparent velocity of rain with respect to the girl is Rain is falling vertically downwards with a speed of 4 km/h. A girl moves on a straight road with a [...]
Sand is falling on a flat car being pulled with constant speed. The rate of mass falling on the cart is constant. Then the horizontal component of force exerted by the falling sand on the cart (sand particles sticks to the cart)
22
Sep
Sand is falling on a flat car being pulled with constant speed. The rate of mass falling on the cart is constant. Then the horizontal component of force exerted by the falling sand on the cart (sand particles sticks to the cart) A mass m1 with initial speed v0 in the positive x - direction [...]