Question

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Answer 1

Answer:

1. Different types of force are;

1. Gravitational force
2. Tensions
3. Contact force
4. Non Contact force
5. Frictional force
6. Spring force
7. Normal force
8. Mascular force

2. Gravitational force is a force that attracts any two objects with mass.

Question no 3 I don't know

4. It is a force that act on a body moving in a circular path and is directed towards the centre around which the body is moving.

5. The acceleration which is gained by an object because of gravitational force is called its acceleration due gravity.

6. The value of 'g' on planet (or satellite) depends on the mass and radius of that planet (or satellite).

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Answer 2

Answer:

1 There are four different forces. From our daily life we have experience with the gravitational and electromagnetic forces. In addition there are the so called strong and weak forces which are important at the subatomic level.

2. Earth attracts all things towards it through an unseen force of attraction. This force of attraction is called as gravitation or gravitational pull.

3.Gravitatioanl force of mercury is 3.7m/s2 of Venus is 8.87m/s2 of Mars is 3.711m/s2

4. A force that acts on a body moving in a circular path and is directed towards the centre around which the body is moving.

5. The acceleration which is gained by an object because of gravitational force is called its acceleration due to gravity. Its SI unit is m/s2.

6. The radius of the earth and the altitude on which the person or object is standing .

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