Question

give two examples of (a) muscular force (b) mechanical force (c) gravitational force (d) fractional force ​

Answer 1

Explanation:

1)muscular force -- lifting a book.

pushing a desk.

2)mechanical force -- running of a fan.

rotating of the blades of windmill.

3)gravitational force -- falling down of Apple when left from above the ground.

the attraction of the planets towards the sun which is the cause of their fixed orbit.

4) frictional force -- the wear and tear of tyres on a rough road.

the sound produces by running parts of a machine is due to frictional force

Answer 2

• Muscular Force : The Force exerted by the muscles of the body is called Muscular force.

E.g; Pushing, Climbing

• Gravitational Force: The pull exerted by objects possessing mass is called Gravitational force.

E.g; A leaf falls from the tree, Rainfalls down to the earth.

• Frictional force: The force which always opposes the motion of one body over another body is called Frictional force.

E.g; Car to move on road without skidding, Cut wood with a saw.

• Mechanical Force : The force which contact with another object on which force is applied.

E.g; Pushing a door, Hammer is used to hit the nail on wall.