Wheels are added to trolleys for smooth travel. What is the principle behind this?

Sliding friction is less than rolling friction

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Sliding friction is more than rolling friction

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Both sliding friction and rolling friction are the same

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There is no comparison between sliding friction and rolling friction.

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Solution

The correct option is B
Sliding friction is more than rolling friction

Wheels are added to trolleys to reduce friction. As rolling friction is lesser than sliding friction, adding wheels to trolleys reduces opposition to motion.

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Similar questions

Q. Sliding friction is always less than rolling friction.

Which of the following statements is incorrect?
(a) static friction is greater than rolling friction
(b) sliding friction is less than rolling friction
(c) rolling friction is less than static friction
(d) static friction is greater than sliding friction

Since rolling friction is less than sliding friction, sliding friction is replaced with rolling friction in most machines using ball bearings.

Is rolling friction greater than sliding friction?

Ball bearing is a device which usually converts:
(a) rolling friction into sliding friction
(b) static friction into sliding friction
(c) sliding friction into rolling friction
(d) rolling friction into static friction

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Wheels are added to trolleys for smooth travel. What is the principle behind this?

The correct option is B Sliding friction is more than rolling friction Wheels are added to trolleys to reduce friction. As rolling friction is lesser than sliding friction, adding wheels to trolleys reduces opposition to motion.

The correct option is B
Sliding friction is more than rolling friction

Wheels are added to trolleys to reduce friction. As rolling friction is lesser than sliding friction, adding wheels to trolleys reduces opposition to motion.