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3 years ago

8

At what condition does a body become weightless at the equator?

1 answer:

vesna_86 [32]3 years ago

3 0

Weightlessness is experienced when there is no net force acting on a body in the vertical direction. Whenever an object is rotating, such as the earth is, it applies an outward centrifugal force on the objects on its surface. At the equator, this force is in the direction exactly opposite to the force attracting us towards the earth, gravity.
If the earth were to spin faster by almost 17 times, the centrifugal force would become equal to the force of gravity and an object would experience weightlessness.

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3 years ago

8) Find the X and Y component of 10degree vector that has 5N.

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Answer:

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Fy = 0.868 [N]

Explanation:

Let's take the 10 degrees as a measure from the horizontal component to the vector.

Thus taking the components in the X & y axes respectively:

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