A block m is kept stationary relative to cage on a rough inclined surface of an accelerating cage as shwon in the figure. At the give instant,

A block m is kept stationary relative to cage on a rough inclined surf

1.	A block m is kept stationary relative to cage on a rough inclined surface of an accelerating cage as shwon in the figure. At the give instant,
Answer» Normal reacton performs positive work on the block in a give TIME interval Power delivered by normal REACTION relative to CAGE is ZERO Work done by frictionalfor on the block is negative in any time interval Net work done by normal reaction and friction between the block and cage is zero in any time interval Answer :A::B