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In this lesson, we will learn how to calculate the velocity required to escape the pull of a gravitational body given the body's mass and radius.

Q1:

Find the escape speed of a projectile from the surface of Pluto. Use a value of 1 . 5 × 1 0 2 2 kg for the mass of Pluto and 2 3 7 0 km for its diameter.

Q2:

What is the Schwarzschild radius for the black hole at the center of our galaxy if it has the mass of 4 . 0 0 × 1 0 6 kg solar masses? Use 1 . 9 9 × 1 0 3 0 kg as the value of the Sun’s mass.

Q3:

A planetoid has a mass of 6 3 . 1 × 1 0 2 0 kg and a radius of 963.0 km. Find the magnitude of the escape velocity from the surface of the planetoid, considering it to be spherical.

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