Question

what is the efficiency of the machine,if a load 1200kg is lifted a simple machine having a velocity ration of 5 and effort applied is 300kg ?​

(a) 60% (b) 70% (c) 80% (d) 90%

Answer 1

Answer:

Step-by-step explanation: M.A = load/effort =4

efficiency =M.A/V.R=4/5=80%