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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: ->->->->->->->->->->->-> :
weight=m*g
weight=.4 kg*9.8 m/s^2=3.92 N
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What is the buoyant force on the ball?
answer/question/discussion: ->->->->->->->->->->->-> :
Net force on ball is 0.
3.92 N is downward
2.5 N tension is upward
2.5 N-3.92 N+0 N=1.42 N
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What therefore must be its volume?
answer/question/discussion: ->->->->->->->->->->->-> :
V=1.42 N/(9800 N/m^3)=.000145 m^3 or 145 cm^3
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What is its density?
answer/question/discussion: ->->->->->->->->->->->-> :
density=mass/volume=400 grams(145 cm^3)=2.75 g/cm^3
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&#Very good responses. Let me know if you have questions. &#