What is the work done when a body is moved horizontly along a frictonless surface?
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This us because the body is moving in a straight path (displacement in straight direction ) and the forces of gravity is acting downwards on the body (normal to the direction of displacement).
Hence the angle between the forces and displacement (€)=90
The work done is given by the formula W=F×cos €
where we is the work done F is the force S is the displacement and € is the angle between the force and displacement.we know €=90
Hence W=F× S cos 90
=F×S×O[since cos 90=0]
Hence w=0
Hence the angle between the forces and displacement (€)=90
The work done is given by the formula W=F×cos €
where we is the work done F is the force S is the displacement and € is the angle between the force and displacement.we know €=90
Hence W=F× S cos 90
=F×S×O[since cos 90=0]
Hence w=0
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