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Which one of the following will reduce friction?

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Important Questions on Friction

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8th CBSE
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Study Mate Science Class 8>Chapter 12 - Friction>NUT Cracker>Q IV
Which of the following is used in machines where lubricants cannot be used?
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Study Mate Science Class 8>Chapter 12 - Friction>NUT Cracker>Q IV
A person with some coconut oil on his hands is likely to hold _____ with great difficulty.
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8th CBSE
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Study Mate Science Class 8>Chapter 12 - Friction>NUT Cracker>Q IV
In fluids, the thicker the medium, the _____ is the frictional force.
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8th CBSE
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Study Mate Science Class 8>Chapter 12 - Friction>NUT Cracker>Q IV
If a cycle is moving in the north — east direction, the direction of frictional force will be:
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Study Mate Science Class 8>Chapter 12 - Friction>NUT Cracker>Q IV
Arrange sand, wood, and stone in their decreasing order of the amount of friction offered by them.
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8th CBSE
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Study Mate Science Class 8>Chapter 12 - Friction>NUT Cracker>Q IV
There are three cubical bodies with surface areas 10 cm2, 20 cm2, and 30 cm2, respectively. The weight of each cube is 10 N. Each body is hung on a spring balance to find the force of friction acting on it. The force of friction will be maximum on the cube with surface area:
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Study Mate Science Class 8>Chapter 12 - Friction>NUT Cracker>Q IV
Spikes in the shoes of athletes:
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Study Mate Science Class 8>Chapter 12 - Friction>NUT Cracker>Q 1
What is a ball bearing?