Chapter 8 – COM, Momentum and Collision
Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 8 - COM, Momentum and Collision
In the arrangements shown in the figure masses of each ball is 1kg and mass of trolley is 4kg. In the figure, shell of mass 1kg moving horizontally with velocity v=6ms−1 collides with the ball and get stuck to it then its maximum deflection of the thread (length 1.5m) with vertical
27
Nov
In the arrangements shown in the figure masses of each ball is 1kg and mass of trolley is 4kg. In the figure, shell of mass 1kg moving horizontally with velocity v=6ms−1 collides with the ball and get stuck to it then its maximum deflection of the thread (length 1.5m) with vertical In the arrangements shown [...]
A pendulum consists of a wooden bob of mass m and of length l. A bullet of mass m1 is fired towards the pendulum with a speed v1. The bullet emerges out of the bob with a speed v1/3 and the bob just completes motion along a vertical circle. Then v1 is :
27
Nov
A pendulum consists of a wooden bob of mass m and of length l. A bullet of mass m1 is fired towards the pendulum with a speed v1. The bullet emerges out of the bob with a speed v1/3 and the bob just completes motion along a vertical circle. Then v1 is : A mass [...]
Two objects that are moving along an xy-plane on a frictionless floor collide. Assume that they form a closed, isolated system. The following table gives some of the momentum components (in kilogram meters per second) before and after the collision. What are the mission values (a, b):
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Nov
Two objects that are moving along an xy-plane on a frictionless floor collide. Assume that they form a closed, isolated system. The following table gives some of the momentum components (in kilogram meters per second) before and after the collision. What are the mission values (a, b): B isolated system. The following table gives some [...]
Three particles of mass 1 kg,2 kg and 3 kg are situated at the corners of equilateral triangle move at speed 6ms-1 3ms-1 and 2ms-1 respectively each particle maintains a direction towards the particle at the next corner symmetrical find velocity of cm of the system at this instant
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Nov
Three particles of mass 1 kg,2 kg and 3 kg are situated at the corners of equilateral triangle move at speed 6ms-1 3ms-1 and 2ms-1 respectively each particle maintains a direction towards the particle at the next corner symmetrical find velocity of cm of the system at this instant A mass m1 moves with a [...]
Three point like equal masses m1,m2 and m3 are connected to the ends of a massless rod of length L which lies at rest on a smooth horizontal plane. At t=0 , an explosion occurs between m2 and m3 , and as a result, mass m3 is detached from the rod, and moves with a known velocity v at an angle of 30∘ with the y -axis. Assume that the masses m2 and m3 are unchanged during the explosion. What is the velocity of the centre of mass of the system consisting of three masses, after the expulsion?
27
Nov
Three point like equal masses m1,m2 and m3 are connected to the ends of a massless rod of length L which lies at rest on a smooth horizontal plane. At t=0 , an explosion occurs between m2 and m3 , and as a result, mass m3 is detached from the rod, and moves with a [...]
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A mass m1 moves with a great velocity. It strikes another mass m2 at rest in head on collision. It comes back along its path with low speed after collision. Then ,
an explosion occurs between m2 and m3 ,
and as a result ,
m2 and m3 are connected to the ends of a massless rod of length L which lies at rest on a smooth horizontal plane. At t=0 ,
mass m3 is detached from the rod ,
Three point like equal masses m1 ,
a)10/3ms-1 b)20/3ms-1 c)5ms-1 d)5/3ms-1
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Nov
a)10/3ms-1 b)20/3ms-1 c)5ms-1 d)5/3ms-1 a)10/3ms-1 b)20/3ms-1 c)5ms-1 d)5/3ms-1 November 27, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 8 - COM, Momentum and Collision ,
A body of mass 1 kg, initially at rest, explodes and breaks into three fragments of masses in the ratio 1:1:3. The two pieces of equal mass fly off perpendicular to each other with a speed of 30m/s each. If the velocity of the heavier fragment is
27
Nov
A body of mass 1 kg, initially at rest, explodes and breaks into three fragments of masses in the ratio 1:1:3. The two pieces of equal mass fly off perpendicular to each other with a speed of 30m/s each. If the velocity of the heavier fragment is A body of mass 1 kg A man [...]
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A body of mass 1 kg ,
A man places a chain of mass ′m′ and length ′l′ on a table slowly. Initially ,
initially at rest ,
the lower end of the chain just touches the table. The man drops the chain when half of the chain is in the vertical position. Then work done by the man in this process is? ,
A mass m1 moves with a great velocity. It strikes another mass m2 at rest in head-on collision. It comes back along its path with low speed after collision.then
27
Nov
A mass m1 moves with a great velocity. It strikes another mass m2 at rest in head-on collision. It comes back along its path with low speed after collision.then A mass m1 moves with a great velocity. It strikes another mass m2 at rest in head on collision. It comes back along its path with [...]
A ball is projected in a direction inclined to the vertical and bounces on a smooth horizontal plane. The range of one rebound is R. If the coefficient of restitution is e, then range of the next rebound is.
27
Nov
A ball is projected in a direction inclined to the vertical and bounces on a smooth horizontal plane. The range of one rebound is R. If the coefficient of restitution is e, then range of the next rebound is. A ball is projected in a direction inclined to the vertical and bounces on a smooth [...]
An object of mass 10 kg is launched from from the top of building at t=0 , at an angle of 37 degrees above the horizontal with a speed of 30 m/s . After some time , an explosion splits the projectile into two pieces . one piece of mass 4 kg is observed at ( 105 , 43 ) meters at t=2 secs . find the location of second piece at t=2 secs
27
Nov
An object of mass 10 kg is launched from from the top of building at t=0 , at an angle of 37 degrees above the horizontal with a speed of 30 m/s . After some time , an explosion splits the projectile into two pieces . one piece of mass 4 kg is observed at [...]
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43 ) meters at t=2 secs . find the location of second piece at t=2 secs ,
an explosion splits the projectile into two pieces . one piece of mass 4 kg is observed at ( 105 ,
An object of mass 10 kg is launched from from the top of building at t=0 ,
at an angle of 37 degrees above the horizontal with a speed of 30 m/s . After some time ,