(a) Show that at any instant of time during the motion total mechanical energy of a freely falli....

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(a) Show that at any instant of time during the motion total mechanical energy of a freely falling body remains constant. Show graphically the variation of K.E. and P.E. during the motion.\n(b) A pump on the ground floor of a building can pump up water to fill a tank of volume 30 m3in 15 min. If the tank is 40 m above the ground, how much electric power is consumed by the pump. The efficiency of the pump is 30%. 📲PW App Link - https://bit.ly/YTAI_PWAP 🌐PW Website - https://www.pw.live



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