Why friction is a necessary evil?
When a pencil cell is released from a certain point on an inclined wooden board, it travels
why are the bodies of birds streamlined
Pls explain this:
To hold a glass of water, friction is necessary. Due to friction present between our fingers and the outer surface of the glass, we are able to grip the glass of water. If there was no friction present, it would not be possible to hold it.
(a) rollers are used for transporting luggage.
(b) metal chains are wrapped on tyres when they run on icy roads.
(c) aeroplanes and car bodies, are made more pointed along their fronts.
(d) talcum powder is put on a carrom-board before a game.
Water comes out more slowly from upstairs tap than from a similar
if you try to hold a glass with oil on your hands it tends to slip.why?
why do brake pads of bicycles have to replaced quite often
WHY DO WE SLIP ON A MUDDY ROAD AND WHEN WE STEP ON A BANANA PEEL?
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