Which of the following is the assumption on the property of the surfac – McqOptions

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1.	Which of the following is the assumption on the property of the surface on which block is present in case we are dealing with the calculations involving the friction?
A.	Non-rigid
B.	Coloured red
C.	Having density in negative
D.	The motion of that block is always horizontal
Answer» B. Coloured red

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