In Fig. 7-9a, Fig. 7-9a a block of mass m lies on a horizontal frictionless surf
ID: 1709299 • Letter: I
Question
In Fig. 7-9a,Fig. 7-9a
a block of mass m lies on a horizontal frictionless surface and is attached to one end of a horizontal spring (spring constant k) whose other end is fixed. The block is initially at rest at the position where the spring is unstretched (x = 0) when a constant horizontal force in the positive direction of the x axis is applied to it. A plot of the resulting kinetic energy of the block versus its position x is shown in Fig. 7-35.
The scale of the figure's vertical axis is set by Ks= 6.0 J. (a) What is the m
Explanation / Answer
when apply a constant force to the mass, the equilibrium position changed. A=F/k. maximum kinetic energy equal to kA^2/2=k*(F/k)^2/2=F^2/2k. ----- i cant see your question.