Question

identify if the forces acting situations given below is gravity or friction.
1.a car parked on a sloping road.
2.a skydiver falls through the air with her parachute open.
3.the moon revolves around the earth
4.you write a letter on a piece of paper using your pen.
5.you keep on walking on earth instead of floating away into space.

Answer 1

Answer:

1)car parked on a sloping road

》in the sloping road the components of gravity(gcos$\theta$) is responsible for its sliding so to prevent it,

friction acts toward upwrds to prevent it from slipping.

2)skydiver falls through the air with her parachute open.

》gravity is the cause for its acceleration.

3)the moon revolves around the earth

》revolution of moon around earth is the result of both angular momentum and gravity.

》gravity is responsible for the continuous momentum it receives.

4).you write a letter on a piece of paper using your pen

》friction is present between the surfaces of pen and paper.

5)you keep on walking on earth instead of floating away into space

》gravity is the sole reason responsible for for attracting the objects towards the earth's surface.

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Answer 2

Answer:

1_friction force.

2_gravitation force.

3_gravitation force.

4_gravitation force.

5_gravitation force.