Q5 of 10 Page 155

You spill a bucket of soapy water on a marble floor accidentally. Would it make it easier or more difficult for you to walk on the floor? Why?

It would make it more difficult for us to walk on a soapy floor because layer of soap on the floor decreases the friction of the floor and we are more likely to slip on the smooth floor rather than walking properly.


More from this chapter

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3

Alida runs her toy car on dry marble floor, wet marble floor, newspaper and towel spread on the floor. The force of friction acting on the car on different surfaces in increasing orderwill be

(a) wet marble floor, dry marble floor, newspaper and towel.


(b) newspaper, towel, dry marble floor, wet marble floor.


(c) towel, newspaper, dry marble floor, wet marble floor


(d) wet marble floor, dry marble floor, towel, newspaper

 4

Suppose your writing desk is tilted a little. A book kept on it starts sliding down. Show the direction of frictional force acting on it.

 6

Explain why sportsmen use shoes with spikes.

 7

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?