Why does upthrust act in an upwards direction?

Larger the volume of the body submerged in fluid, greater is the upthrust. More the density of the fluid, greater is the upthrust. The upthrust acts on a body in an upward direction at the centre of gravity of the displaced fluid which is called the centre of buoyancy.

At which point upthrust on a body is considered to act?

centre of gravity
Upthrust force is caused due to the difference of pressures between lower and upper surfaces of the immersed body in a fluid. It can be considered to act at the centre of gravity of the displaced fluid.

Why upthrust acts on a body immersed in a liquid?

Upthrust is caused due to the upward force which is exerted by a liquid on the body which is immersed in it.

What is the upthrust of a floating body?

“The upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces.” So, it can be summarized that the body floats in the fluid if the buoyant force acting on it is greater than or equal to its weight.

In what direction and at what point does the buoyant force on a body due to a liquid act?

upward direction
The answer is: Buoyant force acts in the upward direction on an object immersed in a liquid.

Will a body weigh more in air or in vacuum?

A body shall weigh more in vacuum because in vacuum, i.e. in absence of air, no upthrust will act on the body.

What happens when a body is immersed in a fluid?

What is Archimedes’ principle? A body at rest in a fluid is acted upon by a force pushing upward called the buoyant force, which is equal to the weight of the fluid that the body displaces. If the body is completely submerged, the volume of fluid displaced is equal to the volume of the body.

When a body is immersed in a liquid a force acts in upward direction and equal to the weight of the liquid displaces is?

Buoyant force on an object immersed in a liquid acts in upward direction.

What are the conditions for a body to float or sink in a liquid explain?

First one, if the buoyant force is equal to the weight of the body, then the body will float and it would be stationary. And if the density of the body is less than the density of the liquid, then the body will float. Second one, if the buoyant force is less than the weight of the body, then the body will sink.