Will give brainliest
when a force of 63n acts on a certain object, the acceleration of the object is 9 m/s^{2}. if the acceleration of the object becomes 4 m/s^{2}, what is the force?

28 N

Explanation:

According to Newton's second law of motion

The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.

in another form,

Force = mass * acceleration

assuming mass is a constant since considering the same object , we can say

Force ∝ acceleration

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this