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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: ->->->->->->->->->->->-> :
110 g = 0.11 kg
30 cm/s = 0.3 m/s
R = 20 cm = 0.2 m
A = (0.3 m/s)^2 / 0.2 m = 0.45 m/s^2
It is towards center in direction in accordance with motion.
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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 = m * a
= 0.11 kg * 0.45 m/s^2
= .05 Newtons
Inward motion of force keeping object moving towards center.
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&#Very good responses. Let me know if you have questions. &#