1.

Explain about gravitational work. Give its unit.

Answer»

SOLUTION :(i)When an object is raised to a certain height against the GRAVITATIONAL field, gravitation WORK is DONE on the object
(ii) For example, if an object of mass .m. is raised through a height.h. against acceleration DUE to gravity .., then the gravitational work carried out is .mgh.
w=m.g.h
`w=kg.ms^(-2) m`
`w=Kg m^2 s^(-2)`
w=Joule


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