General Knowledge - Basic General Knowledge - Discussion

Hi every1,

I think in this case the question is about what effect will increased rotation have on the body on the surface of the earth.

The solution can be understood in a very simple example, if we are traveling in a car and it takes a left turn, we are pushed towards right, here the force acting is the centrifugal force which pushes the body outwards.

Similarly for a body on the surface of the earth, if the earth's rotation increases the centrifugal force will be acting on each body to throw it outward, but due to gravity it will not be thrown off.

And weight=mass* g(acc. due to gravity)

but in this case,

weight= mass* (g - the centrifugal force)

Hence the weight of the body would decrease when rotation increases..

Do let me know if any thing else is required in this regard.

Mass of an object possessing kinetic energy is low compared to the body under rest.

@Akshay,

The centrifugal force is acting towards the centre of the earth not away from it. There is nothing to do with the centrifugal force. Its about the gravity changes, the value of the accl. Due to gravity decreases thus the weight decreases.

Awesome. I would like to know where the weight of body remains same on earth.

If the rotating speed of earth increase then our body weight will be decrease because by the acceleration of speed centrifugal force will produce which will reduce the gravity force.

Good explanation. Thank you all.

With rotational speed centrifugal force on us outward increases, decreasing the force on us due to gravity.

The centripetal force also acts there towards the center. Why does the weight not increased?

It's true I think it follows the newtons third law.

@Akshay.

How can you add or subtract the centrifugal force from gravity? Please check the dimensions of both.