Gravitation Tes...

According to Kepler’s Law of orbits:

Escape speed from the earth is the

According to Kepler’s Law of areas,

The total energy of a circularly orbiting satellite is

According to Kepler’s Law of periods, The  _______________ of the time period of revolution of a planet is proportional to the cube of the  ___________ of the ellipse traced out by the planet

A ‘central’ force is always directed

The acceleration due to gravity at the North Pole of Neptune is approximately 10.7 m/s². Neptune has mass 1.0 x 10²⁶ kg and radius 2.5 x 10⁴ km and rotates once around its axis in about 16 h. What is the gravitational force on a 5.0-kg object at the north pole of Neptune?

To find the resultant gravitational force acting on the particle m due to a number of masses we need to use:

For Geostationary Satellites

The acceleration due to gravity at the North Pole of Neptune is approximately 10.7 x  m/s². Neptune has mass 1.0 x 10²⁶ kg and radius 2.5 x 10⁴ km and rotates once around its axis in about 16 h. What is the apparent weight a 5.0-kg object at Neptune’s equator?

The force of attraction between a hollow spherical shell of uniform density and a point mass situated outside is just as if the entire mass of the shell is

Geostationary Satellites

The force of attraction due to a hollow spherical shell of uniform density, on a point mass situated inside it, is

Suppose there existed a planet that went around the sun twice as fast as the earth. What would be its orbital size as compared to that of the earth?

A particle of mass 3m is located 1.00 m from a particle of mass m. Where should you put a third mass M so that the net gravitational force on M due to the two masses is exactly zero?

Moon has a mass of 7.36 x 10²² kg, and a radius of 1.74 x 10⁶ m. Calculate the acceleration due to gravity on the moon.

If a film of width l is stretched in the longitudinal direction a distance d by force F, surface tension is given by

Titania, the largest moon of the planet Uranus, has 1/8 the radius of the earth and 1/1700 the mass of the earth. What is the acceleration due to gravity at the surface of Titania

Data: G = 6.67x10⁻¹¹ N m²/kg, RE = 6.38 x 10⁶ m, mE = 5.97 x 10²⁴ kg

Which of the following statements correct?

How will you ‘weigh the sun’, that is estimate its mass? The mean orbital radius of the earth around the sun is 1.5 x 10⁸ km.