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A bomb of mass 3 m is kept inside a closed box of mass 3 m and length 4 l at its centre. It explodes in two parts of mass m and 2m. The two parts move in the opposite directions and stick to the opposite sides of the walls of the box. The box is kept on a smooth horizontal surface. What is the distance moves by the box during this time interval.
21
Sep
A bomb of mass 3 m is kept inside a closed box of mass 3 m and length 4 l at its centre. It explodes in two parts of mass m and 2m. The two parts move in the opposite directions and stick to the opposite sides of the walls of the box. The box [...]
Find the time an aeroplane having velocity v takes to fly around a square with side a if the wind is blowing at a velocity u along one side of the square.
21
Sep
Find the time an aeroplane having velocity v takes to fly around a square with side a if the wind is blowing at a velocity u along one side of the square. Find the time an aeroplane having velocity v takes to fly around a square with side a if the wind is blowing at [...]
A man wishing to cross a river flowing with velocity u jumps at an angle theta with the river flow. a. Find the net velocity of the man with respect to ground if he can swim with speed v in still water.
21
Sep
A man wishing to cross a river flowing with velocity u jumps at an angle theta with the river flow. a. Find the net velocity of the man with respect to ground if he can swim with speed v in still water. and stone A is dropped from the tower. Find out the following: (a) [...]
Two identical carts constrained to move on a straight line, on which sit two twins of same mass, are moving with equal velocity. At some time snow begins to drop uniformly. Ram, sitting on one of the carts, picks the snow from cart and throws off the falling snow sideways and in the second cart Shyam is asleep.
21
Sep
Two identical carts constrained to move on a straight line, on which sit two twins of same mass, are moving with equal velocity. At some time snow begins to drop uniformly. Ram, sitting on one of the carts, picks the snow from cart and throws off the falling snow sideways and in the second cart [...]
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are moving with equal velocity. At some time snow begins to drop uniformly. Ram ,
on which sit two twins of same mass ,
picks the snow from cart and throws off the falling snow sideways and in the second cart Shyam is asleep. ,
sitting on one of the carts ,
Two identical carts constrained to move on a straight line ,
A 400 m wide river is flowing at a rate of 2.0 m/s. A boat is sailing with a velocity of 10 m/s with respect to the water, in a direction perpendicular to the river. a. Find the time taken by the boat to reach the opposite bank.
21
Sep
A 400 m wide river is flowing at a rate of 2.0 m/s. A boat is sailing with a velocity of 10 m/s with respect to the water, in a direction perpendicular to the river. a. Find the time taken by the boat to reach the opposite bank. A 400 m wide river is flowing [...]
For the system shown in figure the string is light and pulley is frictionless . The 4 kg block is given an upward velocity of 1 m/s. The centre of mass of the two blocks will
21
Sep
For the system shown in figure the string is light and pulley is frictionless . The 4 kg block is given an upward velocity of 1 m/s. The centre of mass of the two blocks will For the system shown in figure the string is light and pulley is frictionless . The 4 kg block [...]
There are three paths a, b and c of a projectile projected from point P as shown in Fig. 5.62. Prove that v1 > v2 and v3 = v4. What path is correct?
21
Sep
There are three paths a, b and c of a projectile projected from point P as shown in Fig. 5.62. Prove that v1 > v2 and v3 = v4. What path is correct? b and c of a projectile projected from point P as shown in Fig. 5.62. Prove that v1 > v2 and v3 [...]
A particle is projected on an inclined plane with a speed u as shown in Fig. 5.61. Find the range of the particle on the inclined plane.
21
Sep
A particle is projected on an inclined plane with a speed u as shown in Fig. 5.61. Find the range of the particle on the inclined plane. A particle is projected on an inclined plane with a speed u as shown in Fig. 5.61. Find the range of the particle on the inclined plane. September [...]
An object of mass 10 kg is launched from the ground at t = 0, at an angle of 37∘ above the horizontal with a speed of 30m/s. At some time after its launch, an explosion splits the projectile into two pieces. One piece of mass 4 kg is observed at (105 m,43 m ) at t= 2 s. Find the location of second piece at t = 2 s?
21
Sep
An object of mass 10 kg is launched from the ground at t = 0, at an angle of 37∘ above the horizontal with a speed of 30m/s. At some time after its launch, an explosion splits the projectile into two pieces. One piece of mass 4 kg is observed at (105 m,43 m ) [...]
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43 m ) at t= 2 s. Find the location of second piece at t = 2 s? ,
an explosion splits the projectile into two pieces. One piece of mass 4 kg is observed at (105 m ,
An object of mass 10 kg is launched from the ground at t = 0 ,
at an angle of 37∘ above the horizontal with a speed of 30m/s. At some time after its launch ,
A 3000 kg space probe is moving in a gravity free space at a constant velocity of 300 m/s. To change the direction of space probe, rockets have been fired in a direction perpendicular to the direction of initial motion of the space probe, the rocket firing exerts a thrust of 4000 N for 225 s. The space probe will turn by an angle of (neglect the mass of the rockets fired)
21
Sep
A 3000 kg space probe is moving in a gravity free space at a constant velocity of 300 m/s. To change the direction of space probe, rockets have been fired in a direction perpendicular to the direction of initial motion of the space probe, the rocket firing exerts a thrust of 4000 N for 225 [...]
Tags:
A 3000 kg space probe is moving in a gravity free space at a constant velocity of 300 m/s. To change the direction of space probe ,
rockets have been fired in a direction perpendicular to the direction of initial motion of the space probe ,
the rocket firing exerts a thrust of 4000 N for 225 s. The space probe will turn by an angle of (neglect the mass of the rockets fired) ,