F=G總=(1kg+5kg)×10N/kg=60N;
(2)容器底對桌面的壓強(qiáng):
p=
F |
S |
60N |
100×10?4m2 |
(3)水對A點(diǎn)的壓強(qiáng):
p=ρgh=1.0×103kg/m3×10N/kg×(1m-0.35m)=6.5×103Pa;
(4)水對容器底的壓強(qiáng):
p′=ρgh′=1.0×103kg/m3×10N/kg×1m=1×104Pa.
答:(1)容器底對桌面的壓力為60N;
(2)容器底對桌面的壓強(qiáng)為6×103Pa;
(3)水對A點(diǎn)的壓強(qiáng)為6.5×103Pa;
(4)水對容器底的壓強(qiáng)為1×104Pa.