An astronaut on planet X

Classical Mechanics Level 2

An astronaut lands on planet X which has \(\frac34\) the mass and \(\frac34\) the radius of Earth. On Earth the astronaut weighed \(900\ N\). How much does he weigh on planet X?

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An astronaut on planet X

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 6 million people

Learn from a vibrant community of students and enthusiasts, including olympiad champions, researchers, and professionals.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.