this example says a ball is dropped on a floor from a height h, if coefficient of restitution is e we are required to find the height to which ball will rise after rebound . we just analyze the situation in this problem we can see , on a floor a ball is dropped from […]

# Tag: level

in this example again we are given a flat car of mass capital m with a child of mass small m, is moving at speed v-one , here the flat car is moving with speed v-one , and given that the child jumps in the direction of motion of car with a velocity u , […]

in this example again we are given a flat car of mass capital m with a child of mass small m, is moving at speed v-one , here the flat car is moving with speed v-one , and given that the child jumps in the direction of motion of car with a velocity u , […]

in this example it is given that a neutron moving at a speed v undergoes a head on elastic collision with a nucleus of mass number-a at rest . we are required to find the ratio of ki-netic energies of neutron after and before collision. now, let’s analyze this situation, we are given that a […]

## 13. Class 11th Physics | Work Energy Power | Work-Energy Equation for Rigid Bodies | by Ashish Arora

let us study work energy equation for rigid bodies. as we have already studied . for rigid bodies. we can simply state these can never be deformed, rigid means, these can never be deformed . rigid bodies can contain only ki-netic energy elastic potential energy can never be stored in these. so , independently in […]

dear students, let us study law of conservation of momentum now as we have already studied in the previous chapter , about system of particles, for a system of particle we have studied that velocity of centre of mass , of a system of particle can be given by , total momentum of system divided […]

in this example we are given that a ball with a speed 9 meters per sec strikes, another identical ball at rest such that after collision, the direction of each ball makes an angle 30 degree with the original line of motion, and here we are required to find the speed of the two balls […]

let’s discuss about conservation of angular momentum in satellite motion. we know well that, in motion of a satellite, around a planet, we can say the only force acting on satellite is the gravitational force, only force on it, is gravity. and that too directed towards the center of the planet, we say only force […]

## 13. Physics | System of Particles | Solved Example-10 on Conservation of Momentum | Ashish Arora(GA)

this example says that a figure shows a spring block system , on which time varying force , 5 t is applied on two k g mass, and after ten sec velocity of three k g mass is observed to be thirty meters per sec, we are required to find velocity of two k g […]

in this example, we are given that a bullet of mass five k g is fired toward a twenty k g block at speed thirty meters per second , which is placed on smooth ground . it is observed that the bullet penetrates the block, and comes out at a speed of ten meters per […]