When an object is oscillating in simple harmonic motion in the vertical direction, its maximum speed occurs when the object a) is at its highest point b) is at its lowest point c) is at the equilibrium point d) has the maximum net force exerted on it e) has a position equal to its amplitude

C) is at the equilibrium point

Explanation:

As we know that the equation of displacement of SHM executing object is given as

now for velocity of the particle we will have

now we will have

now if velocity is maximum then we will have

so at this situation we will have

now at this angle the value of

so the position must be mean position at which the particle is at equilibrium position

potential energy is directly proportional to height.

more height = more potential energy.

greatest increase in height = greatest increase in potential energy

where are the points with the greatest increase in height ?

has to be c-e or d-e .

no simpler subs form complex ones. synthesise = make