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Dennis_Churaev [7]
4 years ago
6

Marla says that only one person was really responsible for the theory of planetary motion. Do you agree with her? Why or why not

?
Physics
2 answers:
mr Goodwill [35]4 years ago
7 0
I do not agree with her. The theory of planetary motion was a group effort between Johannes Kepler and Sir Isaac Newton. I don't feel as if Tycho Brahe had much to do with it seeing as it was really Kepler who figured it all out.

(this is my own answer which worked)
salantis [7]4 years ago
5 0
Sample Response:<span> I disagree with her because it took several people hundreds of years to arrive at the current model. Kepler developed his planetary laws on Copernicus's heliocentric model with Brahe's data. Newton based his universal law of gravitation on Kepler's work and Hooke's ideas.</span>
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3 years ago
As an intern at an engineering firm, you are asked to measure the moment of inertia of a large wheel for rotation about an axis
klio [65]

Hi there!

We can begin by finding the acceleration of the block.

Use the kinematic equation:

d = v_0t + \frac{1}{2}at^2

The block starts from rest, so:

d = \frac{1}{2}at^2\\\\12 = \frac{1}{2}a(4^2)\\\\\frac{24}{16} = a = 1.5 m/s^2

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Now, we can do a summation of torques for the wheel:

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Rewrite:

I\alpha = rT

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\alpha = a/r\\\\\alpha = 1.5/.42= 3.57 rad/sec^2

Now, plug in the values into the equation:

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8 0
3 years ago
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