Ans
1
->
Density of water = 1000kg/m3
since it is given the pipe ejects 0.2 m3 (volume) of water per second so
mass ejected per second is given by mass= 0.2 * 1000 kg/m3 = 200 kg/s.
now we know that change in linear momentum equals to force.
initial p1 = mv1 = 200*18= 3600
final mometum = 0 ( since it is an enelastic collision)
change in momentum = 3600 kg s
FORCE = 3600/1 sec = 3600 N
thank you.
6 years ago
by
shubham kushwaha