Question

1. define force.
2. define pressure.
3. there are how many types of force?
4. define muscular force.
5. define gravitational force.
6. deferenciate between contact and non– contact force?

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Answer 1

Answer:

1.In physics, a force is any interaction that, when unopposed, will change the motion of an object.

2.Pressure is the force applied perpendicular to the surface of an object per unit area over which that force is distributed.

3. Search in chrome - physicsabout

4.Muscular force is the force applied using parts of the body like arms or legs. It is force that results due to the action of muscles, and is a contact force, since there is a contact between the surfaces. Muscular force is needed whenever movement of the body occurs. Walking, lifting, getting up

5.The gravitational force is a force that attracts any two objects with mass. We call the gravitational force attractive because it always tries to pull masses together, it never pushes them apart.

6.A non-contact force is a force which acts on an object without coming physically in contact with it. ... In contrast a contact force is a force applied to a body by another body that is in contact with it.

Answer 2

Answer: there are three types of force:

Muscular force

Mechanical force

Electrostatic force

Gravitational force: the force exerted by earth due to its own gravity is called gravitational force

Explanation: