A wooden block is taken to the bottom of a lake of water and then released . It rises up with with a constant acceleration. Explain
Answers
Hi, please consider the answer given below;
First let us go through the question once again;
A wooden block is taken to the bottom of a lake and then released. Then it rises up with a constant acceleration.
This is normally because of the upthrust force.
It is also important that you appreciate the fact that;
The wooden block rises up with acceleration, and we can generally say that Acceleration, a=(Upthrust-weight of block)/(Mass of block)
Given A wooden block is taken to the bottom of a lake of water and then released . It rises up with with a constant acceleration.
Net upward force on the block is equal to upthrust weight is equal to constant until it remains under water.
acceleration = upthrust - weight of block / mass of block
The upthrust of water applied on the block is constant and the wooden block will accelerate constantly from rest.
Archimedes' principle states that 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 and acts in the upward direction at the center of mass of the displaced fluid. (source google)