There is an opening of area a near bottom of a vessel containing liquid upto height h.Liquid is of density
d.A disc is held against opening to keep liquid from running out.Liguid exerts a force f on disc.If disc is movef by a short distance from opening emerging liquid strike disc with force
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hence the wrk done in the process is gain in kinetic energy
- let l be the dist moved by the disc,,then F.l=1/2 x m v²
- 1/2 x [dxaxl]{√[2gh]}²
- F=adgh
- correct me if its wrong
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