Question

13.Most of the machines use ball bearings in order to reduce friction. How is rolling more efficient than sliding? *

1 point

(a) the mass of the object reduces

(b)it provides lubrication between the surfaces

(c) interlocking between the surfaces increases

(d)the area of contact between the surfaces is low

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Answer 1

Answer:

See...

the correct answers are...

B) and C)

Answer 2

Answer:

The answer of this question is

(c) interlocking between the surfaces increases

Explanation:

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