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Radhika Batra Grade: 11
`        A body is weighed by a spring balance to be 1.000 kg at the north pole. How much will it weigh at the equator? Account for the earth’s rotation only.`
3 years ago

## Answers : (1)

Navjyot Kalra
askIITians Faculty
654 Points
```										Sol. Let g’ be the acceleration due to gravity at equation & that of pole = g
g’ = g ω^2 R
= 9.81 – (7.3 * 10^-5)^2 * 6400 * 10^3
= 9.81 – 0.034
= 9.776 m/s^2
Mg’ = 1 kg * 9.776 m/s^2
= 9.776 N or 0.997 kg
The body will weight 0.997 kg at equator

```
3 years ago
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