Why gravitational force of attraction is necessary for a satellite to revolve around earth?
The question was posted by Raj Kumar. The satellite has a velocity. To revolve around, the direction of velocity must change. In the absence of a force it can move only in a straight line. It is the gravitational force which helps the satellite top change direction and revolve around the earth. In other words, for a [...]
Categories: Ask Physics, force of attraction, gravitational force, Project, raj kumar Tags: absence, Auto, centripetal force, change, circular path, direction, Draft, force of attraction, gravitational force, line, Physics, raj kumar, satellite
Misconception on Work and energy conservation
It is said that when work is done energy is lost. But when a man runs in a circular path and reaches the starting point, then the work done is zero but energy is lost. (Divyam asked) Answer: The work done here is not zero, work is done and energy is spent to overcome friction. [...]
Categories: Ask Physics Tags: answer, circular path, conservative force, energy conservation, friction, misconception, non, work
