The “Morse taper” is used to support the workpiece on a machinist’s lathe. The taper is dr...

The “Morse taper” is used to support the workpiece on a machinist’s lathe. The taper is driven into the spindle and is held in place by friction. If the spindle exerts a uniform pressure p = 15 psi on the taper and μs = 0.2, what couple must be exerted about the axis of the taper to loosen it?