Q.1 Sliding friction is larger than
a) Static friction
b) Rolling friction
c) Both a and b
d) Sliding friction is smaller than both static and sliding friction
Q.2 More force is required to move an object if
a) The object is at rest
b) The object is at rest but lubricant is applied
c) The object is rest but the irregularities are more
d) The object has rotating wheel at the base
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Answer:
Q1. b) rolling fricition
Q2. c) the object is rest but the irregularities are more.
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