Flash Card
Acceleration of an object throw upwards is always taken _______as it moves against the force of gravity.
Which of the following statements about the gravitational constant is true?
The minimum velocity of the spacecraft to escape from earth’s gravitational force must be ______.
According to Newton's _______ law of motion, a force acting on a body results in its acceleration.
When an object is taken from earth to the moon,
Which of the following in NOT a characteristic of gravitational force?
The force of attraction between two-unit point masses separated by a unit distance equals
Which is the gravitational potential energy of an object located 20,000m above the earth’s surface ?
The value of acceleration due to gravity
on the value of acceleration due to gravity is ⅙ times that on the surface of the earth.
Uniform circular motion is possible only ______.
When distance between two objects is decreased by d times, the gravitational force between them increases 4 times. The value of d is ________.
If earth’s satellite is moved from one stable orbit to a father stable orbit, then which of the following quantities increase?
What would happen to the moon if the earth stops exerting force of attraction on it?
The orbit of a planet is an_______with the Sun at________
A ______ is necessary to change the speed as well as the direction of motion an object.
Law of gravitation gives the gravitational force between__________
Which of the following law states areal velocity of the planet remains constant?
The tidal waves in the sea are primarily due to gravitational effect of
Accordinfg to Kepler,the period of revolution of a planet(T) and its mean distance grom the sun(r) are related by the equation
According to Newton’s first law of motion, higher the mass _______is the inertia.
Escape velocity on a planet is ve. If radius of the planet remains same and mass becomes 4 times, the escape velocity becomes
Where will it be profitable to purchase 1 kilogram sugar?
The square of orbital period of revolution of a planet is directly proportional to the_____of the mean distance of the planet from the sun.
Medium in which true free fall is possible is ______.
In SI units, the value of G is equal to the _______ between two masses of 1 kg kept 1 m apart.
In which of the following cases centripetal force is not experienced?
Which of the following is example of free fall?
The gravitational force between two bodies is directly proportional to the product of the masses of those bodies and is_________of the distance between them
If mass of one of two objects is doubled then the gravitational force acting between the two is _______
Value of acceleration due to gravity (g)_________as we go deep insider the earth.
If the gravitational attraction of the earth suddenly disappears, then
The value of g on moon 1/6th of its value on the earth. If a person weighs 14 N on the moon’s surface, then the weight of the person on earth’s surface is
A boy is whirling a stone tied to a string in a horizontal circular path. If the string breaks, the stone
The earth revolves around the Sun in one year.If the distance between them becomes double,the new period of revolution will be
Which of the following is the S.I. unit of universal gravitational constant?
Though the gravitational force is much weaker than other forces in nature but it controls the Universe because of the ______.
When a feather and a heavy stone are dropped from a same height at the same time in vacuum
The value of universal gravitational constant (G) in SI unit is _______.
Force which is directed towards the center of the circle is ______.
Escape velocity of a satellite depends on the
The direction of the acceleration due to gravity of any object is always_______.
