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Questions and Answers
What is the force that opposes the relative motion between two surfaces of objects when they come in contact?
What is the force that opposes the relative motion between two surfaces of objects when they come in contact?
- Kinetic friction (correct)
- Rolling friction
- Static friction
- Limiting friction
What causes interlocking of micro-level irregularities between the two surfaces and ploughing of harder surfaces into smoother surfaces?
What causes interlocking of micro-level irregularities between the two surfaces and ploughing of harder surfaces into smoother surfaces?
- Nature of the surfaces coming in contact (correct)
- Heat generated by friction
- The roughness of the surface
- Extent by which the two surfaces can be pressed together
When a body is at rest, what is the force of friction acting on it known as?
When a body is at rest, what is the force of friction acting on it known as?
- Rolling friction
- Static friction (correct)
- Limiting friction
- Kinetic friction
What is responsible for causing wear and tear in tyres?
What is responsible for causing wear and tear in tyres?
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What type of frictional force is usually smaller than sliding frictional force?
What type of frictional force is usually smaller than sliding frictional force?
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