physics help momentum


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Momentum
Momentum - Momentum is another vector quantity which has the same direction as that of velocity. Momentum is a property of the body possessed by virtue of its mass and velocity. It is the product of mass of the body and its velocity. Momentum = mass x velocit..
Momentum
We know that all moving objects possess momentum. Momentum of the body is defined as the product of its mass and the velocit..
Momentum
Momentum - We know that all moving objects possess momentum. Momentum of the body is defined as the product of its mass and the velocity. Now let us see how kinetic energy of a body is related to its momentum. Consider a body of mass 'm' moving with a velocit..
Momentum
Consider a car and a bicycle moving at the same velocity. Now, if you could somehow use the same brake system on both vehicles, the bicycle will stop first. Why do think so? Is it because the bicycle is lighter? Yes, it is because the bicycle is lighter. This makes us think of a new property of a b..
Angular Momentum
Angular momentum bears the same relation to linear momentum that torque does to forc..
Angular Momentum
The concept of linear momentum and the principle of conservation of linear momentum are extremely powerful tools. They allow us to predict the outcome of, say a collision of two cars without knowing the details of the collision. Here, we begin a discussion of angular counter..
Physical Meaning of Angular Momentum
Consider a particle capable of rotation about an axis. At any time t, let its momentum be and , the position vector. Then the angular momentum is given by the cross product and . = x..
Laws of conservation of linear momentum
If no external force acts on a system of colliding objects, then the total momentum before collision is equal to the total momentum after collision, in the same directio..
Law of Conservation of Momentum
If no external force acts on a system in a particular direction then the total momentum of the system in the direction remains unchange..
Illustrations Angular Momentum
>A ballet dancer can vary her angular speed by outstretching her arms and legs. Suppose the dancer is rotating with her legs and arms stretched outward and if she suddenly folds her arms and brings her stretched legs closer, thereby reducing the moment of inertia, her angular velocity increases due..
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