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PHY 201
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=0.110 kg, v=30 cm/s / 100 = 0.30 m/s, r = 0.20 m
a=v^2/r = (0.30 m/s)^2 / 0.20 m = 0.45 m/s^2
This acceleration is directed to 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: ->->->->->->->->->->->-> :
F_cent = m*a -= 0.110 kg * 0.45 m/s^2 = 0.0495 N
The force is directed towards the center of the circle.
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10 minutes
&#Very good responses. Let me know if you have questions. &#