The torque required to overcome viscous resistance of a footstep bear – McqOptions

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1.	The torque required to overcome viscous resistance of a footstep bearing is (where μ = Viscosity of the oil, N = Speed of the shaft, R = Radius of the shaft, and t = Thickness of the oil film)
A.	μπ²NR/60t
B.	μπ²NR²/60t
C.	μπ²NR³/60t
D.	μπ²NR⁴/60t
Answer» E.

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