A small block with mass 0 0350 kg slides in a verticalcircle of radius 0-600 m on the inside of a circulartrack During one of the revolutions of the block, whenthe block is at the bottom of its path, point A, themagnitude of the normal force exerted on the block bythe track has magnitude 3.90 N In this samerevolution, when the block reaches the top of its pathpoint B, the magnitude of the normal force exerted onthe block has magnitude 0 660 NPart AHow much work was done on the block by friction during the motion of the block from point A to point BExpress your answer with the appropriate units.WictionSubmit-0.5634J0Previous Answers Request Answerx Incorrect; Try Again; 10 attempts remaining?

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