cq_1_251

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.

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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 = v^2/r

A = 30^2/20 = 45 cm/s^2

The magnitude of the acceleration is 45 cm/s^2. I don't know how to find the direction.

• What is the magnitude and direction of the centripetal force required to keep it moving around this circle?

answer/question/discussion: ->->->->->->->->->->->-> :

m = .110 kg

a = 45 cm/s^2

F = ma

F = .110 * .45

F = 0.0495 N

The magnitude of the force required to keep it moving around the circles is .0495 N.

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15 min

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&#Very good responses. Let me know if you have questions. &#