Syvum Home Page

Home > Physics > Gravitation >


Previous
Previous
Contents
Contents
Next
Next

Refresh or reload the page for a new set of questions.

Physics: Multiple Choice Questions on Gravitation


1.

A satellite orbits at a height h above the Earth's surface. Let R be the Earth's radius. If Ve is the escape velocity and Vo is the orbital velocity of the satellite orbiting at a height h << R, then

  Ve = 2 Vo

  Ve = Vo

  Vo2 = 2 Ve2

  Ve2 = 2 Vo2

2.

A satellite is moving around the Earth in a circular orbit with a velocity V. If the gravitational force of the Earth were to suddenly disappear, then the satellite would

  fall towards the surface of the Earth.

  move with a velocity V, tangentially to its circular orbit.

  move radially outwards with a velocity V.

  spirally move away from the Earth.

3.

A planet is moving around the Sun in a circular orbit of circumference C. The work done on the planet by the gravitational force F of the Sun is

  FC/2

  Zero.

  FC

  F/C

4.

A reference frame attached to the Earth

  is an inertial frame by definition.

  is not an inertial frame because the Earth moves with respect to the Sun.

  is an inertial frame because Newton's laws of motion are applicable inside it.

  cannot be an inertial frame of reference because of the Earth's rotation and revolution.

5.

If the escape velocity of a rocket from the surface of the Earth is ve , then the escape velocity of the same rocket from the surface of a planet whose acceleration due to gravity as well as radius are 3 times that of the Earth is

  9 ve

  ve

  3 ve

  ve / 3

Click the "Score and Show Answer(s)" button for explanations.



Previous
Previous
Contents
Contents
Next
Next

Contact Info © 1999-2018 Syvum Technologies Inc. Privacy Policy Disclaimer and Copyright