Question

;:-[A cork of mass 10 g is floating on water. Net force
on the cork is :-
(1) 10 N
(2) 10-3N
(3) 10-2 N
(4) Zero​

Answer 1

Weight mg acts downwards

So it should sink into water

But it is floats

It means an equivalent force acting on it in opposite direction

This force is exerted by water is called buoyancy

so netforce =weight -buoyancy=0Newton