what does hm in physics

, called the moment of inertial of the body about the axis of rotation. Let us note the similarity between 'm' is the mass of the body and does not depend on the choice of the origin or the axes of rotation or the kind of motion. But, the moment of inertia depends on the choice of axis. Ho..

The load is the force against which the machine does the wor..

One advantage of wind energy is that it is available everywhere and in plenty. We will never run out of wind power. It does not create any kind of pollution; like smoke and harmful gases or harmful radiatio..

Angular momentum bears the same relation to linear momentum that torque does to forc..

Strain - The change in configuration of a body depends on the type of stress. The ratio of change in configuration to the original configuration is called a strain. Strain, being a ratio, does not have any units or dimensio..

We often hear that an astronaut experiences weightlessness in space. What does this mean? Let us perform a simple experiment to demonstrate weightlessnes..

In electrostatic situations, the electric field is zero everywhere within the conductor, and there is no current. This does not mean that all charges within the conductor are at res..

It should always be remembered that whenever you have to charge a body, it must be insulated from the earth. It means that the body should be supported on a stand which is made of an insulating material which does not allow charges to pass into the eart..

When coal is heated without air, it does not burn but produces many by-products. This process of heating coal in the absence of air is called destructive distillation of coa..