Question

The weight of an object on the earth’s surface is 80 N. What will be its weight at a height of 320 km from the surface of the earth? (Take g = 10 ms-2 )

Answer 1

Answer:

Explanation:

Since weight at surface is 80N, then mass is 80/10= 8 kg.

For apparent value of g, g*=g(1-2h/R)

here g=10 h=320km R=6400km

we will get 9 as new value of g.

Now multiply with mass. 9x8=72N.

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