Question

Give the reason:-

(i)Powder is applied to carom board.

(ii)Oil in applied to the moving part of a machine.​

Answer 1

Explanation:

ANSWER:-

Applicable Chapter:-

☆ Force, pressure and Friction

(i)Powder is applied to carom board.

This is because powder reduces the amount of friction which is produced on the striker and carom coins. This increases the efficiency to play with the coins, reducing obstacle amount produced.

(ii)Oil in applied to the moving part of a machine.

Oil in applied to the moving part of a machine because when machine works, it generates heat which is due to the friction produced by the machine parts. As we know that friction produces heat, it might damage the machine. So oil is applied to reduce the friction on the machine parts.

$\huge{\rm{ Some \ more \ Applications \ (Pressure)}}$

• The straps of school bags are made thick because we know that area is inversely proportional to pressure. To reduce pressure, area is increased.

• The thin heels sink in sand whereas sandals do not . This is because the area of sandals is more, so pressure inversely proportional to area, hence they do not sink unlike heels. So its preferred to wear sandals in beach.

Answer 2

Answer:

Question (1)

Powder is applied to carrom board

Answer (1)

The powder is applied to the carrom to reduce the amount of friction. So, that the Striker can slide easily and didnt stuck anywhere.

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Question (2)

Oil in applied to the moving part of a machine

Answer (2)

Oil is applied on the moving part of machine because sometimes it heat and damage the machine parts. As we know that friction also produces heat. That's why Oil is applied on moving part of machine