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PHY 121
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: ->->->->->->->->->->->-> n:
v^2/r
magnitude = (30cm/sec)^2/20cm
=45cm/sec^2
The acceleration is directed towards the center of the circle
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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: ->->->->->->->->->->->-> n:
F_net = m*a
=.11kg * .45m/sec^2
=.0495N
The force is also directed towards the center.
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&#Very good responses. Let me know if you have questions. &#