cq_1_271

Phy 201

Your 'cq_1_27.1' 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 ball of mass 400 grams is immersed in water. The ball is suspended in the water by a rubber band chain which exerts a tension force of 2.5 Newtons on the ball.

• What is the weight of the ball?

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

Fg = .4 kg * 9.8 m/s/s

Fg = 3.92 Newtons

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• What is the buoyant force on the ball?

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

Fnet = Fg – Ft – Fb

0 = 3.92 N – 2.5 N – Fb

Fb = 1.42 N

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• What therefore must be its volume?

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

Fb = (V * 1g/cm^2) * 9.8 m/s/s

1.42 kg * m/s/s = (V * 1g/cm^3) * 9.8 m/s/s

.145 kg = V * 1g/cm^3

145 g = V * 1g/cm^3

V = 145 cm^3

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• What is its density?

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

p = m/v

p = .4 kg / 145 cm^3

p = .0028 kg/cm^3

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30 minutes

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

*&$*&$