Podcast
Questions and Answers
What is the force responsible for keeping the moon in orbit around the Earth?
What is the force responsible for keeping the moon in orbit around the Earth?
- Frictional force
- Magnetic force
- Electromagnetic force
- Centripetal force (correct)
What is the name of the force that acts on all objects with mass and causes them to be attracted to one another?
What is the name of the force that acts on all objects with mass and causes them to be attracted to one another?
- Inertial force
- Gravitational force (correct)
- Tensional force
- Centrifugal force
What observation led Newton to discover the force of gravity?
What observation led Newton to discover the force of gravity?
- A stone thrown upwards
- A leaf floating in water
- An apple falling on him (correct)
- A ball rolling down a hill
Which law of motion helps explain why an object thrown upwards eventually falls back down to the ground?
Which law of motion helps explain why an object thrown upwards eventually falls back down to the ground?
In the context of gravitation, what does centripetal force refer to?
In the context of gravitation, what does centripetal force refer to?
What would happen if there was no gravitational force between the Earth and the moon?
What would happen if there was no gravitational force between the Earth and the moon?
How does weight vary for an object at different locations on Earth?
How does weight vary for an object at different locations on Earth?
What happens to an object when the centripetal force acting on it is reduced?
What happens to an object when the centripetal force acting on it is reduced?
Which of Newton's laws explains why an object remains at rest until acted upon by an external force?
Which of Newton's laws explains why an object remains at rest until acted upon by an external force?
Why do all planets revolve around the Sun?
Why do all planets revolve around the Sun?
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