Buoyancy and Displaced Fluid

Buoyancy Reduces Apparent Weight

Apparent weight is the checked difference between weight and buoyancy. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

Buoyancy reduces apparent weight

Object weight 100 newtons minus buoyancy 60 newtons leaves apparent weight 40 newtons.

100minus⁡60=40100\operatorname{minus}60=40
Apparent weight ledgerWeight, buoyancy, and apparent weight are checked.rho=2 kg/m^3g=10 m/s^2V=3 m^3B=60 NW=100 NWapp=40 N

The remaining support reading is exact

The apparent-weight label is 40 because the upward buoyant force is 60.

Wapp=40 NW_{\mathrm{app}}=40\ \mathrm{N}
Apparent weightNo partial-submersion curve is claimed.rho=2 kg/m^3g=10 m/s^2V=3 m^3B=60 NW=100 NWapp=40 N