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.
** **
Seed 25.1
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: ->->->->->->->->->->->-> : You can find centripetal acceleration by taking v^2/r which gives 45m/s/s. The direction should be towards the center of the circle. Isn’t this true for all centripetal motion.
• What is the magnitude and direction of the centripetal force required to keep it moving around this circle?
answer/question/discussion: ->->->->->->->->->->->-> :
The centripetal force=m(centripetal acceleration) this would give 4.95N. This should be outward from the center of the circle. Is there a more specific direction I should be solving for?
** **
20 mins
Good, but v^2 / r would be (900 cm^2/s^2) / (20 cm) = 45 cm/s^2 = .45 m/s^2, so the force would be .0495 N.