Arihant Physics by D.C Pandey
A particle of mass m is made to move with uniform speed v along the perimeter of a regular polygon of 2 n sides. The magnitude of impulse applied at each corner of the polygon is:
26
Nov
A particle of mass m is made to move with uniform speed v along the perimeter of a regular polygon of 2 n sides. The magnitude of impulse applied at each corner of the polygon is: A particle of mass m is made to move with uniform speed v along the perimeter of a regular [...]
The centre of mass of a non-uniform rod of length L whose mass per unit length λ=L/kx2 where k is a constant and x is the distance from end P is:
26
Nov
The centre of mass of a non-uniform rod of length L whose mass per unit length λ=L/kx2 where k is a constant and x is the distance from end P is: The centre of mass of a non-uniform rod of length L whose mass per unit length λ=L/kx2 where k is a constant and x [...]
Two blocks of masses 3kg and 6kg respectivley are placed on a smooth horizontal surface. They are connected by a light spring of force constant k=200N/m . Initially the spring is unstretched. The indicated velocities are imparted to the blocks. Find the maximum extension of the spring.
26
Nov
Two blocks of masses 3kg and 6kg respectivley are placed on a smooth horizontal surface. They are connected by a light spring of force constant k=200N/m . Initially the spring is unstretched. The indicated velocities are imparted to the blocks. Find the maximum extension of the spring. Displacement of a particle of mass 2 kg [...]
A particle of mass 1 kg is projected at an angle of 30degree with horizontal with a velocity v=40 m/s. The change in linear momentum of the particle after time t=1 s will be: (g=10m/s2)
26
Nov
A particle of mass 1 kg is projected at an angle of 30degree with horizontal with a velocity v=40 m/s. The change in linear momentum of the particle after time t=1 s will be: (g=10m/s2) A particle of mass 1 kg is projected at an angle of 30degree with horizontal with a velocity v=40 m/s. [...]
Ball 1 collides with an another identical ball 2 at rest as shown in figure. For what value of coefficient of restitution e, the velocity of second ball becomes two times that of 1 after collision?
26
Nov
Ball 1 collides with an another identical ball 2 at rest as shown in figure. For what value of coefficient of restitution e, the velocity of second ball becomes two times that of 1 after collision? Ball 1 collides with an another identical ball 2 at rest as shown in figure. For what value of [...]
Displacement of a particle of mass 2 kg moving in a straight line varies with time at s=(2t3+2)m. Impulse of the force acting on the particle over a time interval between t=0 and t=1 s in?
26
Nov
Displacement of a particle of mass 2 kg moving in a straight line varies with time at s=(2t3+2)m. Impulse of the force acting on the particle over a time interval between t=0 and t=1 s in? Displacement of a particle of mass 2 kg moving in a straight line varies with time at s=(2t3+2)m. Impulse [...]
A 2kg toy car can move along x−axis. Graphs shows resultant force Fx , acting on the car which begins at rest at time t=0 . The velocity of the car at t=10s is
26
Nov
A 2kg toy car can move along x−axis. Graphs shows resultant force Fx , acting on the car which begins at rest at time t=0 . The velocity of the car at t=10s is A 2kg toy car can move along x−axis. Graphs shows resultant force Fx acting on the car which begins at rest [...]
A rocket of mass 4000 kg is set for vertical firing. How much gas must be ejected per second so that the rocket may have initial upwards acceleration of magnitude 19.6 m/s2 [Exhaust speed of fuel =980m/s]
26
Nov
A rocket of mass 4000 kg is set for vertical firing. How much gas must be ejected per second so that the rocket may have initial upwards acceleration of magnitude 19.6 m/s2 [Exhaust speed of fuel =980m/s] A force exerts an impulse I on a particle changing its speed from u to 2u. The applied [...]
An open water tight railway wagon of mass 5×103kg coasts at an initial velocity of 1.2m/s without friction on a railway track. Rain falls vertically downwards into the wagon. What change then occurred in the kinetic energy of the wagon, when it has collected 103 kg of water ?
26
Nov
An open water tight railway wagon of mass 5×103kg coasts at an initial velocity of 1.2m/s without friction on a railway track. Rain falls vertically downwards into the wagon. What change then occurred in the kinetic energy of the wagon, when it has collected 103 kg of water ? A force exerts an impulse I [...]
A ball is projected from ground with a velocity V at an angle θ to the vertical. On its path it makes an elastic collision with a vertical wall and returns to ground.The total time of flight of the ball is
26
Nov
A ball is projected from ground with a velocity V at an angle θ to the vertical. On its path it makes an elastic collision with a vertical wall and returns to ground.The total time of flight of the ball is A force exerts an impulse I on a particle changing its speed from u [...]