A force of 2i+3j+2kN acts on a body for 4s and produces a displacement of 3i+4j+5k m. calcuate power.

 

Asked by vikasrajouriya | 22nd Aug, 2020, 09:34: AM

Expert Answer:

Work done = F.s  = (2i+3j+2k).(3i+4j+5k) = 2.3 + 3.4+2.5 = 6+12+10=28 J 
Power = Energy/time 
Energy = Work done
Thus, 
Power = 28/4 = 7 W 

Answered by Shiwani Sawant | 23rd Aug, 2020, 12:05: AM