Gravitation

The moon and other satellites rotate around the earth. Identify the force that keeps these satellites in orbit.

• gravity

• friction

• a strong force

• electromagnetic force

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

Force of gravity is directly proportional to

• Product of Mass

• Weight

• Distance

• Time

Tags

NGSS.HS-PS2-4

The square of its period of revolution around the sun is ...........proportional to the cube of the mean distance of a planet from the sun.

• Inversely

• Directly

Tags

NGSS.HS-ESS1-4

The orbit of a planet is an ellipse with the sun at one of the foci.

• Kepler's First law

• Kepler's Second law

• Kepler's third law

The value of g also....... we go inside the earth.

• Same

• Changes

Every object in the universe attracts every

other object with a force which is proportional

to the product of their ------- and inversely

proportional to the ---------

• masses, distance between them.

• masses,square of the distance between them.

• distance between them,masses

• square of the distance between them,masses

Tags

NGSS.HS-PS2-4

If M=m=1 kg and d= 1 m, Then the gravitational force between M and m is------------------

• 6.673X10^-11 N

• 6.673X10^-11 Nm²kg^-2

• 1 N

• None of the above

Tags

NGSS.HS-PS2-4

Gravitational force obeys inverse square law.

• True

• False

Tags

NGSS.HS-PS2-4

In the absence of the centripetal force, the stone flies off along-----------

• the circular path itself.

• a curved path.

• a straight line.

• the centre.

Tags

NGSS.HS-PS2-1

The earth do not fall towards an apple because-------

• For a given force, the acceleration is inversely proportional to the mass of the object.

• For a given force, the acceleration is directly proportional to the mass of the object.

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4