2.An object of mass $5.0\,g$ undergoes simple harmonic motion. The graph shows how displacement $x$ of the object from the equilibrium varies with time $t$.
(1)Calculate, in $rads^{−1}$, the angular frequency of the oscillation.ω= $rads^{-1}$
(2)Calculate, in N, the maximum net force acting on the object towards equilibrium.Maximum force= N
(3)Sketch a graph to show how velocity varies with time by using the grid lines below. (There is no need to add values for the y-axis)
3.A metal block connected to a wall with a horizontal spring is oscillating on a rough surface which has a constant coefficient of dynamic friction. Air friction can be ignored.
Deduce whether the metal block executes simple harmonic motion and explain your reasoning.
