Homework Help: physics

Posted by calous --- HELP PLEASEE!!! on Saturday, February 26, 2011 at 7:39pm.

Which of the following statements is not true about a particle executing Simple Harmonic Motion?
Choose one answer.
a. Its velocity is maximum at the equilibrium position.
b. Its acceleration depends only upon its displacement at that instant.
c. Its velocity is zero at the equilibrium position.
d. Its velocity is zero at the extreme positions.

physics - bobpursley, Saturday, February 26, 2011 at 7:40pm
what do you think?
physics - calous --- HELP PLEASEE!!!, Saturday, February 26, 2011 at 7:42pm
c
physics - calous --- HELP PLEASEE!!!, Saturday, February 26, 2011 at 7:43pm
sorry b.
physics - bobpursley, Saturday, February 26, 2011 at 7:44pm
b? Hmmmm. acceleration= force/mass, and that is equal to kx/mass

so acceration depends on x
physics - calous --- HELP PLEASEE!!!, Saturday, February 26, 2011 at 7:46pm
then its d
physics - bobpursley, Saturday, February 26, 2011 at 7:47pm
Hmmmm. At the extreme positions, velocity is zero, it changes directions, the question asked which is not true. Are you guessing or thinking?
physics - calous --- HELP PLEASEE!!!, Saturday, February 26, 2011 at 7:49pm
A then ... guessing i dont understand this stuff at all -_-
physics - bobpursley, Saturday, February 26, 2011 at 7:50pm
WEll, you missed it three out of three, and your first guess was right. The velocity is NOT zero at the equilbrium position, it is maximum there.

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