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3 years ago

Rank the gravitational forces exerted on the Earth by the following objects.

Physics

1 answer:

bonufazy [111]3 years ago

8 0

Answer:

Explanation:

According to newton's law of gravitation , equal force of attraction are applied on two masses m₁ and m₂ placed at distance d . This force is given by the expression

F = G m₁ m₂ / d²

If one of the masses be earth with mass M then d = radius of earth R

Force F = G Mm₁ / R²

this force is applied on both the earth and mass m₁ in equal magnitude and in opposite direction.

In the formula F is proportional to m₁

among the given objects in the question , m₁ of object varies in the following order.

skyscraper > car > human being > basket ball

So Force F on the earth by them will also vary in the same order.

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3 years ago

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Pavlova-9 [17]

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Explanation:

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The normal reaction, N also acting downward

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Learn more about circular motion:

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3 years ago

The energy of a photon was found to be 3.38 x 10-19 J. Planck's constant is 6.63 x 10-34 J. S. Which color of light corresponds

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Answer:

The correct option is (c).

Explanation:

Given that,

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Where

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