Question

Which of the following is an example of increasing friction? -waxing skis -adding grease to gears on a bike -throwing sand on an icy driveway -oiling a squeaky door

Answer 1

Answer:

Adding gears on a bike

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Answer 2

The correct response to the given question is option c: Throwing sand on an icy driveway.

• Increasing the force of friction between two contact surfaces entails increasing the surface roughness to inhibit easy mobility.
• Except for one, all of the examples presented below are examples of lowering friction between interacting surfaces in order to make the surface smoother for better mobility and movement.
• Using sand to increase friction on an icy driveway is an example of increasing friction with the goal of preventing slipper motion on an icy path.
• Ice has a particularly slippery texture and surface, posing a risk of slipping and falling for anything moving or walking on it.
• For this reason, sand is emptied or thrown to the surface to create a bumpy route on the track.
• As a result, putting sand over an icy path increases friction.