Who discovered the inverse square law for gravity ??
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When a wheel 1 m in diameter makes 30 rev min the linear speed of the point on its rim in ms-1 is ??
The planet nearest to the earth is ??
A cyclist cycling around a circular racing track skids because ??
A satellite moving around the earth constitutes ??
If a wheel of radius r turns through an angle of 30° then the distance through which any point on its rim moves is ??
The minimum number of communication satellites required to cover the whole earth is ??
In an angular motion, Newton’s second law of motion is ??
A body of 2 kg is suspended from the ceiling of an elevator moving up with an acceleration g. Its apparent weight in the elevator will be ??
The angular speed of seconds hand of a watch in rads-1 is ??
If a body of mass 10 kg is allowed to fall freely, its weight becomes ??