Friction can be reduced by changing from _________?
Correct answer: B. Sliding to rolling
- A. Rolling to sliding
- B. Sliding to rolling
- C. Dynamic to static
- D. Potential energy to kinetic energy
Explanation
Rolling friction is much smaller than sliding friction because the surfaces do not continually scrape past each other. This is why wheels, rollers and ball bearings make movement easier.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Physics in Daily Life
Everyday physics explains motion, force, work, power, pressure, heat, light, sound and electricity through familiar devices and natural events. Topics include simple machines, friction, expansion, reflection and refraction, lenses, household circuits, electrical safety and magnetism, with mass distinguished from weight and heat distinguished from temperature.
Practise Physics in Daily Life
343 free Physics in Daily Life MCQs from Everyday Science, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Everyday Science questions like this
Everyday Science is on 40 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Physics in Daily Life questions
Escape velocity of a rocket fired from the earth towards the moon is a velocity to get rid of the _______?
For seeing objects at the surface of water from a submarine under water, the instrument used is ________?
Heat of sun reaches the earth by ___________?
"Father of Optics" is the title given to__________?
The light rays used for eliminating bacteria?
The Earth behaves like a magnet with ______ poles?