Chapter 10 – COM, Momentum and Collision
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A set of n identical cubical blocks lies at rest parallel to each other along a line on a smooth horizontal surface. The separation between the near surfaces of any two adjacent blocks is L . The block at one end is given a speed v towards the next one at time t = 0 . All collisions are completely inelastic, then
22
Oct
A set of n identical cubical blocks lies at rest parallel to each other along a line on a smooth horizontal surface. The separation between the near surfaces of any two adjacent blocks is L . The block at one end is given a speed v towards the next one at time t = 0 [...]
Three objects A ,B and C are kept in a straight line on a smooth horizontal surface. These have masses m, 2m and 3m , respectively . The head – on elastic collision takes place between A and B and then B makes completely inelastic collision with C. All motions occur on the same straight line. The final speed of C will be
22
Oct
Three objects A ,B and C are kept in a straight line on a smooth horizontal surface. These have masses m, 2m and 3m , respectively . The head – on elastic collision takes place between A and B and then B makes completely inelastic collision with C. All motions occur on the same straight [...]
A block of mass 2m is attached to a string of length L=5m. The block is released when the string is horizontal , it picks up a particle of 2m kept at rest at the lowest point. The maximum height attached by the combined mass is
22
Oct
A block of mass 2m is attached to a string of length L=5m. The block is released when the string is horizontal , it picks up a particle of 2m kept at rest at the lowest point. The maximum height attached by the combined mass is A block of mass 2m is attached to a [...]
Consider the situation as shown in the diagram. The bullet penetrates the block and emerges with speed v0/3. If after collision , the string becomes horizontal , v0 will be
22
Oct
Consider the situation as shown in the diagram. The bullet penetrates the block and emerges with speed v0/3. If after collision , the string becomes horizontal , v0 will be Consider the situation as shown in the diagram. The bullet penetrates the block and emerges with speed v0/3. If after collision the string becomes horizontal [...]
A bullet of mass 20g moving horizontally strikes a block of mass 480g suspended by a string of length 2m. If the collision is completely inelastic , the minimum velocity of bullet , so that the combined mass complete vertical circle should be
22
Oct
A bullet of mass 20g moving horizontally strikes a block of mass 480g suspended by a string of length 2m. If the collision is completely inelastic , the minimum velocity of bullet , so that the combined mass complete vertical circle should be A bullet of mass 20g moving horizontally strikes a block of mass [...]
A bullet of mass 10g moving horizontally with a speed of 400m/s a block of mass 390g and remains in it. The block slides 10m on rough surface before coming to rest. The friction coefficient is
22
Oct
A bullet of mass 10g moving horizontally with a speed of 400m/s a block of mass 390g and remains in it. The block slides 10m on rough surface before coming to rest. The friction coefficient is A bullet of mass 10g moving horizontally with a speed of 400m/s a block of mass 390g and remains [...]
A particle of mass m moving eastward with a speed v collides with another particle of the same mass moving northward with the same speed v. The two particles coalesce on collision. The new particle of mass 2 m will move in the north – easterly direction with a velocity
22
Oct
A particle of mass m moving eastward with a speed v collides with another particle of the same mass moving northward with the same speed v. The two particles coalesce on collision. The new particle of mass 2 m will move in the north – easterly direction with a velocity A neutron collides head-on and [...]
A sphere of mass m , moving with velocity V, enters a hanging bag of sand and stop. If the mass of the bag is M and it is raised by height h, then the velocity of the sphere was
22
Oct
A sphere of mass m , moving with velocity V, enters a hanging bag of sand and stop. If the mass of the bag is M and it is raised by height h, then the velocity of the sphere was A sphere of mass m enters a hanging bag of sand and stop. If the [...]
A bullet of mass m moving with velocity v strikes a block of mass M at rest and gets embedded into it. The kinetic energy of the composite block will be
22
Oct
A bullet of mass m moving with velocity v strikes a block of mass M at rest and gets embedded into it. The kinetic energy of the composite block will be A bullet of mass m moving with velocity v strikes a block of mass M at rest and gets embedded into it. The kinetic [...]
A ball A of mass 1kg , moving with a speed of 12m/s , collides obliquely and elasticity with another ball B which was initially at rest. Ball A then moves off at the right angle to its initial direction with a speed of 5m/s. The momentum of ball B after the collision is
22
Oct
A ball A of mass 1kg , moving with a speed of 12m/s , collides obliquely and elasticity with another ball B which was initially at rest. Ball A then moves off at the right angle to its initial direction with a speed of 5m/s. The momentum of ball B after the collision is A [...]