Analogy: Knot in thread :increase Friction::Ball bearing:____ Friction. downward force : Weight :: Upward force offered by liquid: ____
Answers
Answered by
15
Answer:
Decrease friction
Buoyancy
Explanation:
Answered by
0
Answer:
1. Decrease Friction
2. Buoyant Force Or Buoyancy
Explanation:
Friction can be increased by knot in the thread and decreased by the use of ball bearings.
Friction can also be reduced by various methods which are as follows.
- Lubrication of surfaces.
- Streamlining the body.
- Reduce the contact between the surfaces.
Friction can also be increased by various methods which are as follows.
- By making the surfaces rough.
- By increasing normal force.
- By removing the lubricants.
If downward force is acting on aon object, then it is called as weight while when upward force is offered by the liquid on an object, it is called as buoyancy or buoyant force.
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