Step-by-step explanation:
It is given that,
For a moving object, the force acting on the object varies directly with the objects acceleration.
When the force of 81 N acts in a certain object, the acceleration of the object is 9/ms^2.
......(1)
If the force is 63 N then,
......(2)
On solving equation (1) and (2), we get :
So, the acceleration of the object is when the force acting on it is 63 N. Hence, this is the required solution.
