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Friction
Which is small sliding friction or static friction?
Sliding friction is smaller than the static friction.
When the objects are sliding against each other, the interlock between the surfaces stays for a short while and is overcome due to inertia of motion.
In case of a static object, a lot of energy has to be spent in overcoming the resistance posed by the interlocked irregularities.
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You spill a bucket of soapy water on a marble floor accidently. Would it make easier or more difficult for you to walk on the floor? Why?
Explain why sportsmen use shoes with spikes.
Iqbal has to push a lighter box and Seema has to push a similar heavier box on the same floor. Who will have to apply a larger force and why?
Explain why sliding friction is less than static friction.
Give examples to show that friction is both a friend and a foe.
Explain why objects moving in fluids must have special shapes.
What is force of friction?
What is the cause of friction between two surfaces?
Which is small sliding friction or static friction?
Which force helps to write by chalk on black board?
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