What torque does friction exert even as this wheel

Reference no: EM135042

Q1. A 750 gram grinding wheel 25.0 cm in diameter is in the shape of a uniform solid disk. (We can overlook the small hole at the center). When it is in use, it turns at a consant 220 rpm about an axle perpendicular to its face through its center. As the power switch is turned off, you observe that the wheel stops in 45.0 s with constant angular acceleration due to friction at the axle. What torque does friction exert even as this wheel is slowing down?

Q2. With what tension should a rope with length 3.00m and mass 0.135kg be stretched for transverse waves of frequency 43.0Hz to have a wavelength of 0.720m?

Reference no: EM135042

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