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 […]

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 […]

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 […]