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A mass of 10 kg is at point A on a table . it is moved towards point B( in a straight horizontal line) . calculate the work done?
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A mass of 10 kg is at point A on a table . it is moved towards point B...
We have,
 
Mass m kept on table, m = 10 kg

Displacement of mass from A to B is horizontal.

Force of gravitation acts vertically downwards. That is, force acts perpendicular to displacement.

∴ W = Fs cos 90degree = 0. 

Work done on the object by the gravitaional force is 0.
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A mass of 10 kg is at point A on a table . it is moved towards point B( in a straight horizontal line) . calculate the work done?
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