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प्रश्न
Complete the analogy.
Knot in a thread : _____ friction : : Ball bearing : _____ friction
उत्तर
Knot in a thread : increase friction : : Ball bearing : reduces friction
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संबंधित प्रश्न
A charged glass rod attracts a charged plastic straw.
Fill in the blank.
We use ball bearings to .................. the friction.
Give an example to illustrate the existence of the force of friction.
State two factors which directly affect the force of friction.
Fill in the blank.
Rolling friction offers ............. resistance than sliding friction.
Tick the most appropriate answer.
A car skids on a wet or muddy road due to
Rolling friction is slightly greater than sliding friction.
Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play
Friction depends on the ______ of two surfaces in contact.
Complete the analogy.
Knot in a thread : ______ friction :: Ball bearing : ______ friction.
