Fluid Mechanics
Up thrust and weight.
A piece of wood is held underwater. The up thrust on it is:
The up thrust on the wood is in the upward direction.
It is the sum of the weight of wood and force applied to hold it underwater.
Thus, it is more than the weight of wood.
Up thrust and weight.
A balloon filled with hydrogen rises upwards because:
A body weighs $$500 \,g$$ in air and $$300 \,g$$ in water, it implies that upward thrust experienced in water is $$500 \,gm.$$
What is upthrust?
What is the scientific name of the 'upward force' acting on an object immersed in a liquid?
Name these forces: (a) the upward push of water on a submerged object (b) the force which wears away two surfaces as they move over one another (c) the force which pulled the apple off Issac Newton's tree. (d) the force which stops you falling through the floor.
A body dipped into a liquid experiences an upthrust. State two factors on which upthrust on the body depends.