A mass is attached to a spring and is moving in simple harmonic motion. Snapshot

Question

A mass is attached to a spring and is moving in simple harmonic motion. Snapshots of this motion are shown to the left lettered A through E. Between which letters is the position positive and the A velocity negative? At which point(s) is the force from the spring the largest in magnitude? At which point(s) is the force from the spring zero? At which point(s) does it have the largest magnitude acceleration? At which point(s) is there zero acceleration? At which point(s) does the spring have the most elastic PE? At which point(s) does it have the most KE? At which point is the total mechanical energy (E) the greatest? At which point(s) is the mass not moving? At which point(s) is it moving fastest? A mass on a horizontal spring undergoes harmonic motion. Which of these actions will increase the length of time it takes for one oscillation? Circle all that apply.

Explanation / Answer

a)
Answer: Between A and B
here displacement is positive but velocity is negative as object is moving in negative x direction

b)
F is largest, when acceleration,a is largest
a = -w2^A
Answer: point C

c)
F is 0 when a is 0.
acceleration,a is 0 at equilibrium point
Answer: B and C

D)
a is largest at extreme points
Answer: A,C and E

only 4 subparts at a time please

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