1:   With the use of ---- sliding friction changes into rolling friction.
Options:
1. ball bearing
2. electricity
3. stones
4. all the above

Explanation:

Sorry, No description available.

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2:   Force of friction is the product of normal reaction and ----
Options:
1. n
2. v
3. m
4. none of these

Explanation:

it is production of normal reaction and meu (u). Discuss this in Forums

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3:   All acceleration and rotational frames of reference are --------------frame of reference.
Options:
1. initial
2. non initial
3. both the above
4. none of these

Explanation:

Sorry, No description available.

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4:   Coefficient of kinetic friction is ----than the coefficient of static friction.
Options:
1. equal
2. greater
3. less
4. none of these

Explanation:

Sorry, No description available.

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5:   Friction is a ----------force
Options:
1. conservative
2. non conservative
3. both the above
4. none of these

Explanation:

Sorry, No description available.

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6:   The value of limiting friction is ----- proportional to normal reaction.
Options:
1. directly
2. inversely
3. both the above
4. none of these

Explanation:

Sorry, No description available.

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7:   Force of friction acts ---to contact surface.
Options:
1. perpendicular
2. parallel
3. opposite
4. none of these

Explanation:

Sorry, No description available.

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8:   Newton's law of motion are obeyed in -------frame of reference
Options:
1. inertial
2. working
3. momentum
4. none of these

Explanation:

Sorry, No description available.

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9:   Rolling friction is ------- than sliding friction
Options:
1. smaller
2. greater
3. equal
4. none of these

Explanation:

Sorry, No description available.

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10:   The unit of coefficient of friction is
Options:
1. m
2. m/s
3. m/s2
4. no unit

Explanation:

Sorry, No description available.

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To try is to invite uncertainty. Where confidence goes, success usually follows.
-Wayne Gerard Trotman Veterans of the Psychic Wars