This is a fundamental force that attracts objects with mass toward each other. Everything that has mass also has gravity. For the everyday objects you encounter, their gravity is so small you’d never notice. But when objects have a lot of mass, they also have a lot of gravity. Their gravity will pull other objects toward their center. We are held to the Earth by the planet’s gravity. We also exert gravity back on the Earth, but because we are so small, it doesn’t make much of a difference. If we were on another planet, such as Mercury, we would feel like we weighed less. It’s not because our mass is different — it’s not. Instead, it’s because Mercury’s mass is less than that of Earth. Mercury doesn’t have as much gravity, and so we wouldn’t feel as much pull as we feel on Earth. Gravity decreases with distance. The farther away you are from a massive object, the less of its gravity you will feel. The Earth is kept in orbit around the sun by the sun’s gravity. The sun is so massive it attracts planets from Mercury out to Uranus. But go out far enough, past Pluto, and even the sun will lose its pull. 1.1 Which will have more gravity? a. 5 rupee coin b. A car c. A bicycle d. 1 rupee coin 1.2 State whether the given statement is True/False. 1 Mass is constant everywhere. True/False 1.3 All object exerts gravity on each other, then why Earth does not move towards us? ………………………………………………………………………………………………………………… 1.4 Explain how distance of an object is related to the gravity of Earth? …………………………………………………………………………………………………………………. 1.5 Is gravity a contact or non-contact force? Explain. …………………………………………………………
Answers
Answer:
answer of 1.5
A non-contact force is a force which acts on an object without coming physically in contact with it.[1] The most familiar non-contact force is gravity, which confers weight.In contrast a contact force is a force which acts on an object coming physically in contact with it.
All known fundamental interactions are non-contact forces:
Gravity, the force of attraction that exists among all bodies that have mass. The force exerted on each body by the other through weight is proportional to the mass of the first body times the mass of the second body divided by the square of the distance between them.
Electromagnetism is the force that causes the interaction between electrically charged particles; the areas in which this happens are called electromagnetic fields. Examples of this force include: electricity, magnetism, radio waves, microwaves, infrared, visible light, X-rays and gamma rays. Electromagnetism mediates all chemical, biological, electrical and electronic processes.