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Phy 241
Your 'cq_1_25.1' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** CQ_1_25.1_labelMessages.txt **
A steel ball of mass 110 grams moves with a speed of 30 cm / second around a circle of radius 20 cm.
What are the magnitude and direction of the centripetal acceleration of the ball?
answer/question/discussion: ->->->->->->->->->->->-> :
m = 110 g
v = 30 cm/s
r = 20 cm
a = v^2/r
= 45 cm/s^2
magnitude is 45 cm/s^2 and the direction is in the counterclockwise direction
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What is the magnitude and direction of the centripetal force required to keep it moving around this circle?
answer/question/discussion: ->->->->->->->->->->->-> :
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F = m*a
= .110 kg * .45m/s^2 = 0.0495 N
0.0495 N is the magnitude, the force is towards the center of the circle
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10 minutes
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10/14/2012 220pm
&#This looks very good. Let me know if you have any questions. &#