Calculating Velocity in Simple Harmonic Motion

AI Thread Summary
The position of a 49 g oscillating mass is described by the equation x(t) = (2.3 cm) cos(11t). To find the velocity at t = 0.43s, the correct formula v(t) = -vmax sin(2πft) is applied. An initial calculation yielded 0.0206 m/s, which was incorrect due to using degrees instead of radians. The correct maximum velocity is 0.25 m/s, highlighting the importance of using the correct units in calculations. Small errors in unit conversion can lead to significant frustration in solving physics problems.
TerikE
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Homework Statement



The position of a 49 g oscillating mass is given by x(t)= (2.3cm) cos 11t , where t is in seconds.
Determine the velocity at t = 0.43s

Where:
f= 1.75
t=0.43s
vmax=0.25 m/s

Homework Equations



I'm using v(t)= -vmax sin (2pi*f*t)

The Attempt at a Solution



Using above equation and variables I get 0.0206, which is wrong (mastering physics).

Can't figure this one out..
 
Last edited:
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Annnnd.. I was in deg and not rad.. Funny how something so small can cause such great frustration. Answer is .25
 

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