0
What else can I help you with?
What is the apparent weight for a body floating in water equal to?
The apparent weight of a body floating in water is equal to the weight of the water displaced by the body. This is known as Archimedes' principle. The apparent weight is less than the actual weight of the body due to the buoyant force acting on it.
What force acts against gravity in water?
Buoyant force acts against gravity in water. This force is exerted by the water on an object that is submerged or floating in it and acts in the opposite direction to gravity. Bouyant force is what allows objects to float and feel lighter when in water.
What has upthrust got to do with floating in water?
Upthrust, also known as buoyant force, is the force exerted by a fluid that opposes the weight of an object immersed in the fluid. When an object is placed in water, the upthrust is greater than or equal to the weight of the object, causing it to float. If the upthrust is less than the weight of the object, it sinks.
Can upthrust act at a distance?
N o! the upthrust can not act at a distance because it acts on the centre of gravity of the object submerged in water in the opposite direction of weight.
Do boats float better on fresh water or salt water?
The floating or sinking of an object depends on the upthrust force the water exerts on the object. By Archmides' principle, Upthrust Force = (Density of Liquid) * (Volume of Liquid Displaced by the object) therefore the upthrust force depends on the density of the liquid, and as salt water has a larger density than fresh water, boats should float better on salt water.
Why aship floats on a water?
Because the weight of ship balances the upthrust force , We know that weight always act downward and upthrust force always act upward so we can say that it comes in equillibrium condition . that's why it keeps floating on water..........
Can upthrust be greater than weight?
YES...and examples are flying objects! Interestingly,Any liquid or gas produces upthrust. For example, the upthrust of air keeps a hot air balloon up.
What is the apparent weight of the floating block when a block of wood is floating in a lake?
The apparent weight of the floating block is equal to the weight of the displaced water, according to Archimedes' principle. Since the block is floating, its weight is balanced by the upthrust force of the water pushing up on it. So, the apparent weight of the floating block is less than its actual weight.
Give 5 examples of upthrust?
1) A boat on water - upthrust going up keeping it a float also known as buoyancy. 2)Swimmer- upthrust (or buoyancy again) keeps the swimmer on top of the water. 3) A helium filled balloon - helium is lighter than air so it displaces it, pushing up into the air. 4)A hot air balloon - same principals of a helium balloon. can only think of 4 sorry. 5) jumping out of a plane. 6)it is what makes a parachute lift one up when falling.
How does the upthrust effect an object?
The upthrust is the reaction force that water exerts on an object inside water. if the upthust of the water is less than the force exerted by the object, the object sinks in water, and if the upthrust is greater than or equal to the force exerted by the object, the object floats.
Which direction does up thrust act in?
Upthrust, also known as buoyancy force, acts opposite to the direction of gravity. It pushes objects upward when they are submerged in a fluid, such as water.
What is upthurst?
This is the name given to a bouyancey force. When an object diplaces a fluid, the amount of upthrust received is proportional to the volume of fluid displaced. When an object is floating then the upthrust is equal to the objects weight. When more people get on to a boat, the boat sinks further into the water, displacing more water so that the upthrust increases to balance the new weight. If an object sinks then the amount of upthrust it receives is less than the weight so the object falls. Just because it sinks doesn't mean that there is no upthrust, there is. This is why heavy objects appear lighter if you place them in water.
