A SPRING IS USED TO STOP A 60 KG PACKAGE WHICH IS SLIDING ON THE HORIZONTAL TABLE.THE SPRING HAS A STIFFNESS 20 KN/M.AND HELD BY CABLES SO THAT INITIALLY COMPRESSED BY 120mm.THE PACKAGE HAS A VELOCITY 2.5 M/SEC AND MAXIMUM ADDITIONAL DEFLECTION OF THE SPRING IS 40mm THEN FIND
-THE COEFFICIENT OF KINETIC FRICTION BETWEEN THE PACKAGE AND THE SURFACE.?
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