Help me please with questions 6 and 7. 6) What are the period, frequency, equili

Question

Help me please with questions 6 and 7.

6) What are the period, frequency, equilibrium distance and amplitude of the simple harmonic motion of the mass plotted in question 5 (see below)?

7) The mass has just passed through its lowest point and is moving back up:

a) in which direction is the velocity vector pointing?

b) in which direction is the acceleration vector pointing?

c) in which direction is the net force vector pointing?

d) which of these quantities is positive?

e) which of these quantities is negative?

f) which of these quantities is zero?

5. Below is the position graph for a 5kg mass hanging from a vertical spring undergoing simple harmonic motion similar to what we plotted in lab. On the axes provided, sketch the velocity, acceleration and force graphs. (You may use a ruler to draw in vertical lines to guide you.) 25 15 10 10 time () j0 time (sec) velocity (cm/sec) tinfe (sec) Acceleration (cm/sec2) 10 e (sec) Net force (N) Lab 12: Periodic Motion 250 constan

Explanation / Answer

Solving 1st question

As seen from the graph

Amplitude=10cm

velocity=wA

10=w*10

w=1

Frequency=w/2pi=0.159 rad/s

Period=1/f=6.3 sec

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