Q4. A cord is used to lower vertically a block of mass M a distance d at a constant downward acceleration of g/4. Then the work done by the cord on the block is :Physics — Work, Power and Energy — Question 4 of 238A. Mgd/4B. 3 Mgd/4C. MgdD. –3Mgd / 4Practice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →