Something To Know
A. Fill in the blanks.
C. 1
1.
Friction always
any relative motion between the two surfaces that
are in contact with each other.
2.
Static friction is always
than sliding friction.
3.
friction between their
Sportsmen use shoes, fitted with spikes, to
shoes and the ground.
4. Sprinkling of talcum powder, on the carrom-board, helps to
friction.
5.
Frictional force, on an object moving in a fluid, depends on its
6.
to reduce, the effects of friction, due
The shape of an aeroplane is
to air.
B. State True or False for the following statements.
1.
When a body slides over smooth and wet surfaces,
C.
1.
f
Answers
Answer:
Explanation
1.Friction always resists any relative motion between the two surfaces that
are in contact with each other.
2.static friction Is greater than sliding friction.
3.Sportsmen use shoes witli spikes because these shoes give them a better grip while running. This is because the force of friction between the shoes and the ground increases with the help of spikes.
4. Sprinkle a little talcum powder on a carrom board BECAUSE it reduces the force of friction between the striker and the board of carrom. it allows the striker to move freely and swiftly and can slide from each other.
5.The frictional force on an object in a fluid depends on its "shape,nature and speed " with respect to the fluid.
6.The shape of an aeroplane is plan to reduce the effect of friction due to air. diya7967 is waiting for your help.
B) decrease because irregularitise are covered up mostly by wet surface of body slides over it smoothly.
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