If you weigh 690n on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun and
a diameter of 19.0 km ?]
1 answer:
-- If you weigh 690N on the Earth, then your mass is about
(690N) / (9.8 m/s²) = 70 kg .
-- If your mass is 70 kg then your weight on that neutron star would be
G M₁ M₂ / R²
= (6.67 x 10⁻¹¹ N m²/kg²) (70 kg) (1.989 x 10³⁰ kg) / (19,000 m)²
= (6.67 x 10⁻¹¹ x 70 x 1.989 x 10³⁰) / (3.61 x 10⁸) N
= (6.67 x 70 x 1.989 x 10¹⁹) / (3.61 x 10⁸) N
= 2.57 x 10¹³ Newtons .
(about 2,890,000,000 tons !)
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