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iren2701 [21]
4 years ago
7

A spherical mass M is held fixed in deep space, well away from the earth's gravitational pull. A second mass m is released from

rest at a distance r0 from M and begins to move toward M with an initial acceleration a0. In terms of a0, what is m's acceleration when the two masses are only r0/16 apart

Physics
1 answer:
Ivahew [28]4 years ago
8 0

Answer:

256 ×a0

Explanation:

I have added an attachment because I am not sure the phrase that negates brainly word why I couldn't submit the answer directly.

View the explanation from attachment 3 followed by 2 and then 1

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How would a spinning disk's kinetic energy change if its moment of inertia was five times larger but its angular speed was five
Keith_Richards [23]

Answer:

<em>The kinetic energy of a spinning disk will be reduced to a tenth of its initial kinetic energy if its moment of inertia is made five times larger, but its angular speed is made five times smaller.</em>

<em></em>

Explanation:

Let us first consider the initial characteristics of the angular motion of the disk

moment of inertia = I

angular speed = ω

For the second case, we consider the characteristics to now be

moment of inertia = 5I  (five times larger)

angular speed = ω/5  (five times smaller)

Recall that the kinetic energy of a spinning body is given as

KE = \frac{1}{2}Iw^{2}

therefore,

for the first case, the K.E. is given as

KE = \frac{1}{2}Iw^{2}

and for the second case, the K.E. is given as

KE = \frac{1}{2}(5I)(\frac{w}{5} )^{2}   = \frac{5}{50}Iw^{2}

KE = \frac{1}{10}Iw^{2}

<em>this is one-tenth the kinetic energy before its spinning characteristics were changed.</em>

<em>This implies that the kinetic energy of the spinning disk will be reduced to a tenth of its initial kinetic energy if its moment of inertia is made five times larger, but its angular speed is made five times smaller.</em>

6 0
3 years ago
2. A force of 500 N separates two objects. The distance between their centers is 67 m. The first object has a mass of 20 kg. Wha
Bogdan [553]

Answer:

The Equation of Newton's Law of Gravity. G is called the Gravitational Constant, and has the value 6.67×10-11 N ∙m2kg-2 (N is for Newton, the physicists' unit of force)or 1.5×10-11 lb∙m2kg-2

Explanation:

6 0
3 years ago
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