16 Questions
What did Isaac Newton identify as the force responsible for the motion of planets and the moon?
Gravitational force
What is needed to change the speed or direction of an object's motion?
Force
What causes an object to fall towards the earth when dropped from a height?
Gravitational force
What determines the weight of a body at different places?
Gravitational force at that place
What does the moon go around?
The earth
What type of force is responsible for the motion of objects around the Sun?
Gravitational force
According to the universal law of gravitation, the force between two objects is proportional to:
The square of the distance between them
What is the force that keeps the moon moving along its circular path around the earth?
Centripetal force
Why do we not see the earth moving towards an apple, even though the apple attracts the earth?
Due to the negligible mass of the apple compared to that of the earth
What happens to a stone in circular motion when there is no centripetal force acting on it?
It flies off along a straight line tangent to the circular path
What causes a change in direction for a stone in circular motion?
Centripetal force
According to Newton's third law of motion, how does an apple attract the earth?
With an equal and opposite force
What type of force causes a stone to move along a circular path?
Centripetal force
Why does the moon not fall towards the earth, despite being attracted by it?
Because it has negligible mass compared to that of the earth
What provides the centripetal force needed for the moon to orbit around the earth?
Gravitational attraction between the moon and earth
In which direction is the centripetal force acting on an object moving along a circular path?
Towards the center of the circular path
Test your knowledge about the concept of gravitation, including the motion of objects, forces, and the gravitational forces acting on planets and the moon as explained by Isaac Newton.
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