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3 years ago

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Newton’s law of universal gravitation.. . a.. is equivalent to Kepler’s first law of planetary motion.. b.. can be used to deriv

e Kepler’s third law of planetary motion.. c.. can be used to disprove Kepler’s laws of planetary motion.. d.. does not apply to Kepler’s laws of planetary motion.

2 answers:

mixer [17]3 years ago

8 0

By the help of newtons law of gravitation we can derive keplers third law of planetary motion.

emmainna [20.7K]3 years ago

6 0

Answer:

b.. can be used to derive Kepler’s third law of planetary motion..

Explanation:

As per Newton's law of gravitation we can say that two masses separated by some distance "r" will attract each other with force given by

$F = \frac{Gm_1m_2}{r^2}$

now we can say that

if all planets revolves around the sun in approx circular orbit then the centripetal force on the planets will be due to gravitational force of Sun

so we can say

$\frac{mv^2}{R} = \frac{GMm}{R^2}$

so by solving above equation we can find average orbital speed of all planets and hence we can derive all Kepler's law

so correct answer will be

b.. can be used to derive Kepler’s third law of planetary motion..

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4 years ago

The orbital motion of Earth around the Sun leads to an observable parallax effect on the nearest stars. For each star listed, ca

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Answer:

Following are the answer to this question:

Explanation:

Formula:

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Calculating point A:

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3 years ago

kakasveta [241]

Answer:

W = 600 J

Explanation:

We have,

According to attached figure,

Height of the inclined plane is 60 m

Force acting on the block is 10 N

It is required to find the work must be done against gravity to move it to the top of the incline. The work done is given by :

W = mgh

or

$W=F\times h\\\\W=10\times 60\\\\W=600\ J$

So, the work done against the gravity is 600 J.

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