Weekly Weather Report for Luzern, Switzerland. Looking at the weather in Luzern, Switzerland over the next 7 days, the maximum temperature will be 23â (or 73â) on Sunday 9th April at around 1 pm. In the same week the minimum temperature will be -2â (or 28â) on Friday 7th April at around 4 am.
The forces at work in buoyancy. Note that the object is floating because the upward force of buoyancy is equal to the downward force of gravity. In science, buoyancy ( /ËbÉÉª.Énsi, -Éntsi/ or /ËbuËjÉnsi, -jÉntsi/;) or upthrust, is an upward force exerted by a fluid that opposes the weight of an immersed object.
The buoyant force is in the center because that's where the center of PRESSURE is on the body. Buoyant force is a pressure, and the pressure on the body is determined by the area in the liquid, not by the weight. As far as this: That's not strictly true: buoyant force is equal to the pressure exerted by the fluid on the surface of the object. That's why you can, with a properly shaped vessel, float a huge object (like a battleship) in a small amount of fluid (like a bathtub full of water)!