Question

when the fluid element of mass m is going up vertically with an acceleration a then byou any force resulted on it is

a) B = m(a - g)
b) B = m(a + g)
c) B = mg
d) B = m(a + g)​

Answer 1

Explanation:

B=mg.this is the answer

Answer 2

when the fluid element of mass m is going up vertically with an acceleration then buoyancy force resulting in it is B = m(a - g).

The Buoyancy force is defined as the upward force a fluid applies on an object submerged inside it. It is equal to the product of the mass of the object to the acceleration due to gravity 'g'.

B = mg

In this question, we have an element with mass 'm' which is moving upward with an acceleration 'a'.

the acceleration of the element is upwards and the acceleration due to gravity 'g' acting on that body is in downward directions. Therefore the net acceleration acting on that body will be equal to 'a-g'.

Therefore the buoyancy force acting on that body will be

B = m(a-g)