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A heavenly body has a mass equal to half of the mass of the earth and its radius half as that of the earth. If a stone weighs 100 N on the surface of the earth, find the weight of the stone on the heavenly body. Calculate the force between bodies with their mass is 100 kg each.

a. 200 N
b. 400 N
c. 800 N
d. 1600 N

User Nnyby
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1 Answer

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Final answer:

The weight of the stone on the heavenly body is approximately 9.49 N.

Step-by-step explanation:

To find the weight of the stone on the heavenly body, we can use the formula for calculating the weight of an object:

Weight = mass x gravitational acceleration

On Earth, the stone weighs 100 N. Let's assume the mass of the stone is m kg. Therefore, the weight of the stone on Earth is given by:

100 N = m kg x 9.8 m/s2

Solving for m, we find m = 10.2 kg.

Since the heavenly body has a mass equal to half of the Earth's mass, the mass of the heavenly body is 5.97 x 1024 kg / 2 = 2.99 x 1024 kg.

The radius of the heavenly body is half of Earth's radius, which is 6.38 x 106 m / 2 = 3.19 x 106 m.

Now, we can find the weight of the stone on the heavenly body using the same formula:

Weight = mass x gravitational acceleration

Weight = 10.2 kg x gheavenly body

To find gheavenly body, we can use Newton's law of universal gravitation:

F = G x (m1 x m2) / r2

Solving for gheavenly body, we get:

gheavenly body = G x mheavenly body / rheavenly body2

Substituting the values, we have:

gheavenly body = (6.67 x 10-11 N m2/kg2) x (2.99 x 1024 kg) / (3.19 x 106 m)2

Calculating gheavenly body, we find it to be approximately 0.931 m/s2.

Finally, we can find the weight of the stone on the heavenly body:

Weight = 10.2 kg x 0.931 m/s2 = 9.49 N

Therefore, the weight of the stone on the heavenly body is approximately 9.49 N.

User AdarshaU
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