Q9. Which of the following measures are taken to reduces friction
a) Polishing
b) Streamlining
c) Using ball bearing
d) All the above
Answers
Answered by
5
Answer:
d.) All of the above
Explanation:
Polishing, streamlining and using ball bearing all reduce friction as they make the surface smooth.
Answered by
0
Answer:
using ball bearing
Explanation:
because it changes sliding friction to rolling friction.and it is used in moving parts such as vehicles , etc.
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