Question

(i) When an object is immersed in a fluid, name the two forces acting on it ? (ii) On which factor the magnitude of the upward force acting on this object depends ? (iii) When will this object sink ?

Answer 1

Buoyancy and the gravational (not sure about gravational force) act on the object immerged in a fluid.The magnitude of the upward force depends on the density of the object immerged in a fluid. That object will sink if the upward force acting on it is less then the gravational force acting on the object