A plane is inclinea at angle ? to horizontal. If a body can just rest – McqOptions

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1.	A plane is inclinea at angle ? to horizontal. If a body can just rest on a plane, determine the least force to draw the body up the plance
A.	W sin2?
B.	2 W cos2?
C.	107 dynes
D.	W cos2?
E.	2 W sin2?
Answer» B. 2 W cos2?

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