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Phy 231
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: ->->->->->->->->->->->-> :
A_Cent = v^2 / r = (30 cm/s) ^2 / 20 cm = 45 cm/s
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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: ->->->->->->->->->->->-> :
Fcent = Mass * aCent = 0.110 kg * 0.45 m/s^2 = 0.0495 N
The force is always directed - 90 degrees from the center seeking acceleration.
So it is tangent to the direction of motion.
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5 mins
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&#Very good responses. Let me know if you have questions. &#