water is poured from a height of 10m into an empty barrel at the rate of 1 liter per second. if the weight of the barrel is 10kg, the weight indicates at time t=60s will be
a) 72.4kg. b)68.6kg.
b)70.0kg. d)84.0kg.
Answers
Answered by
8
At t=60sec
total weight=weight of water and barrel+that due to momentum of water
hence it should be 71.4kg
total weight=weight of water and barrel+that due to momentum of water
hence it should be 71.4kg
Mayur358:
thanks
but how you calculated the momentum of water
hw it will 84kg bro
sorry but i dont know but its answer given was 84
momentum of water=1into root2gh/10
Answered by
5
Answer:
b
Explanation:
Time taken to reach 10m below =102×10
=2
sec
∴ only (60−2
)sec is effective for pouring of water
∴ total weight =10lkg+(60−2
)l×l1kg
=58.6kg+10kg
=68.6kg
Similar questions