How do you distinguish between Force,Work,Energy and Power?
Force,Work,Energy and Power
Force is a physical quantity which when applied to a body tries to displace or displaces it. This quantity is equal to the product of the mass of the body and its acceleration. The unit for measuring force is Newton or Dyne. Force is required to set any body in motion and this force is applied in a particular direction. The force is an external agency capable of chaning the rest or motion in an object or a body. When force is applied on a body and it gets displaced we say that work has been done on the body by force. The amount of work done by the force is equal to the product of the force and the distance covered by it.
A work done by force is measured in joules. In short force is a vector quantity possessing both magnitude and direction. The capacity of doing work is called energy. Everything in the universe has some energy by which it can do some work. We experience energy in many forms such as mechanical energy heat energy, light energy, electrical energy, magnetic energy, chemical energy, nuclear energy etc.
Total energy of a body is equal to the capacity of the work done by the body while power is the rate of doing work by the body.It is equal to the amount of work done in unit time.
The system to meaure unit of power is called hose power or watt. Horse power is the British unit of power. One horse power is equal to 745.7 watts.