A 0.6 mass is attached to a
horizontal spring which
undergoes SHM. The graph of
EPE as a function of position
shown to the right. The total
energy of the oscillating
system is 3 J.

scientific laws are the result of testing theories and proving them to be facts.

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.