Gravity

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All features, stories and articles tagged with: Gravity


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Why is it Harder to Walk Uphill?

Why is it Harder to Walk Uphill?

Raju heard the familiar cry of the ice-cream seller reach his ears, clear as a bell, even from his fourth floor apartment. He flew out of the flat and bounded down the stairs four steps at a time. The lift being under temporary repair, he had to take the stairs. He arrived downstairs a little breathless, and extremely impatient to have his ice-cream. After buying it, he decided to rush home so he could eat it in peace....

How Lizards Defy Gravity

How Lizards Defy Gravity

Lizards slithering up walls or dangling precariously from overhead lights are a common sight in tropical countries. These slimy creatures zipping up walls are called geckos. They are the only lizard species that make any sound, other than hissing — in fact they make a loud clicking noise that sounds like “gecko”, hence the name. Recent studies show that the gecko’s ability to cling on to surfaces could well lead to the creation of the world’s first non-sticky, self-cleaning adhesive!...

Elevator Physics

Elevator Physics

You get into an elevator (or a lift, as we sometimes call it) and for a second or two, just as the elevator moves down, we feel weightless. On the other hand, if we go up in an elevator, we suddenly feel heavier just as the elevator lurches upwards. To understand this feeling of weightlessness, we need to understand a few basic things first. Mass: The amount of matter that constitues us results in our mass....

Against the Law of Gravity

Against the Law of Gravity

When an apple fell on Newton’s head, he formulated the law of gravity. According to this law, every object is attracted towards the centre of the earth with a force called the gravitational force. But if Newton were to see this ring suspended in mid-air without any support, one wonders what he would have done. The things you need: A ring Cotton thread Matchbox Salt Step 1: Soak the thread in salt water for sometime....

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