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A spool of thin wire pivots on a shaft with friction. The wire is pulled by a hanging mass M=1.50 kg. Upon starting from rest and falling a distance D=1.65 m, the mass has a speed V=2.00 m/s. Calculate the energy lost to friction during that time.
Inner radius: r=0.50 m.
Outer radius: R=0.65 m.
Moment of inertia: Icm=1.09 kg·m2.
Inner radius: r=0.50 m.
Outer radius: R=0.65 m.
Moment of inertia: Icm=1.09 kg·m2.