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harkovskaia [24]

3 years ago

7

look at picture, need to know net force, whether they are balanced or unbalanced and whether they are accelerated or not acceler

ated!

1 answer:

kogti [31]3 years ago

7 0

Answer:

1) 100 ...unb. and accelerate

2) 7...unb. and accelerate

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You pull a solid nickel ball with a density of 8.91 g/cm3 and a radius of 1.40 cm upward through a fluid at a constant speed of

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Answer:

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The constant speed means that ball is not experimenting acceleration. This elements is modelled by using the following equation of equilibrium:

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Now, the exerted force is:

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Lastly, the force is calculated:

$P = (8910\,\frac{kg}{m^{3}} )\cdot (1.149\cdot 10^{-5}\,m^{3})\cdot (9.81\,\frac{m}{s^{2}} )+(0.950\,\frac{kg}{s})\cdot (0.09\,\frac{m}{s} )$

$P = 1.090\,N$

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