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 […]

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 […]

in this example we are given, a triangular fixed wedge of height h, and angle of inclination theta , and is given that a block-a , which is also given is of mass m , is released from rest top of the a wedge block of height h, as shown in figure , if velocity […]

let us study a very important concept about, radio active beta emission, that is apparent violation of conservation laws in beta decay. it is observed that during beta decay, when it was discovered, the fundamental laws, are not being followed, or we can say when mathematically beta decay was analyzed based on experimental values, conservation […]

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 […]

let us discuss about 1 of the most important concept in fluid dynamics that is bernawlli’s theorem. we can state about it that, this is a theorem, about, conservation of energy, for a flowing fluid, from 1 end to another, in stream line flow. when a fluid is flowing in a stream line manner then […]