Nguoi ta do day nuoc vao trong 1 cai binh chua nuoc voi chieu cao 1m . Nguoi ta ve them 1 diem A cach day 0,3m .
a, Tinh ap suat tac dung len day binh
b, Tinh ap suat tac dung len day binh cach A .
c, Khi ap suat tac dung len day binh giam di 1 nua , thi chieu cao luc do la bao nhieu .
Bai lam :
a, Ap suat tac dung len day binh la :
P=d.h=10000.1=10000 N/m2
b, Chieu cao cua nuoc tu diem A cach mat nuoc la :
1-0,3=0,7 m
Ap suat tac dung len day binh cach A 0,3 la :
P=d.h=10000.0,7=7000 N/m2
c, Ap suat tac dung len day binh giam 1 nua la :
P=10000/2=5000 N/m2
Chieu cao luc do la :
h=P/d=5000/10000=0,5 m
M.n coi thu bai mk dung k nha . Sai m.n sua lai zum mk . Mk k co y tick .
(Day la bai thi ***** cua lop mk)
