Friction Between Two Surfaces

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What is the term used to describe the extra force required when two surfaces rub against each other?

Force of wear

Force of lubrication

Force of separation

Force of friction (correct)

How can the friction between two moving surfaces be considerably reduced?

By applying more pressure on the surfaces

By using a lubricant to separate the surfaces (correct)

By reducing the speed of the moving surfaces

By increasing the weight on the surfaces

What happens to high spots (or hills) on surfaces when they rub against each other?

They break off (correct)

They increase in size

They become smoother

They form corrosion barrier films

How can a lubricant help reduce wear between two surfaces?

By preventing the high spots from coming into contact Signup and view all the answers

What is one role of lubricants in temperature control?

To absorb and carry away heat Signup and view all the answers

In what scenario can lubricants serve as a cushion to absorb shock?

When surfaces impact each other Signup and view all the answers

What is friction between two surfaces defined as?

Resistance to motion Signup and view all the answers

What is the primary reason for the resistance to relative motion between two smoothly ground metal surfaces?

The interlocking of surface irregularities Signup and view all the answers

What is the purpose of lubrication in relation to surface irregularities?

To separate surfaces with interlocking surface irregularities Signup and view all the answers

What are the two most important purposes of lubricants?

Friction reduction and wear reduction Signup and view all the answers

What happens when surfaces with irregularities rub together?

They cling or weld together Signup and view all the answers

What is not a purpose of lubricants?

Acceleration of motion Signup and view all the answers

Friction Between Two Surfaces

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Questions and Answers

What is the term used to describe the extra force required when two surfaces rub against each other?

How can the friction between two moving surfaces be considerably reduced?

What happens to high spots (or hills) on surfaces when they rub against each other?

How can a lubricant help reduce wear between two surfaces?

What is one role of lubricants in temperature control?

In what scenario can lubricants serve as a cushion to absorb shock?

What is friction between two surfaces defined as?

What is the primary reason for the resistance to relative motion between two smoothly ground metal surfaces?

What is the purpose of lubrication in relation to surface irregularities?

What are the two most important purposes of lubricants?

What happens when surfaces with irregularities rub together?

What is not a purpose of lubricants?

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