Syvum Home Page

Home > Physics > Gravitation >


Previous
Previous
Contents
Contents

Refresh or reload the page to get another set of problems.

Challenging Physics Problems for Practice: Gravitation

1.

An artificial satellite (mass m) of a planet (mass M) revolves in a circular orbit whose radius is n times the radius R of the planet. The satellite experiences a slight resistance due to cosmic dust. The resistance force is dependent on the satellite velocity as F = a v2, where a is a constant. Calculate how long the satellite will remain in orbit before it falls on to the planet's surface.

2.

A small asteroid starts falling onto the sun from a distance equal to the radius of the Earth's orbit. Initially the body starts off with zero velocity. Using Kepler's law, find in terms of the Earth's orbital time period T how long the rock will take to fall into the sun.

3.

A rocket is fired vertically with a velocity vo. Derive an expression for its velocity v at a height h, given that the radius of earth is R.

Click the "Score and Show Answer(s)" button for the answers to the problems.



Previous
Previous
Contents
Contents

Contact Info © 1999-2022 Syvum Technologies Inc. Privacy Policy Disclaimer and Copyright