Solve this : A machine is used to lift a load of 20 N through a height of 10 m. If the efficiency of the machine is 40% how much work is done ? Share with your friends Share 0 Vijay Shankar Yadav answered this Dear Student, Work done =20×10=200Jas efficiency is 40%then total work done by machine =200×100/40=500J Regards 0 View Full Answer
