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Physics, 19.09.2019 17:30 jsushehdhdu
Acylinder of mass m and radius r is rotating in a v-shaped groove with a constant angular velocity ω0. the coefficient of friction between the cylinder and the surface is μ. what external torque must be applied to the cylinder to keep it rotating at a constant angular velocity? express your answer using some or all of the following variables: m for the mass of the cylinder, g for the gravitational acceleration, r for the radius of the cylinder and μ for the coefficient of friction.
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Physics, 22.06.2019 18:30, kayleahrayne
Ablock of mass m slides on a horizontal frictionless table with an initial speed v0 . it then compresses a spring of force constant k and is brought to rest. the acceleration of gravity is 9.8 m/s2. how much is the spring compressed x from its natural length? 1) x = v0*sqrt(k/(mg)) 2) x=v0*sqrt(m/k) 3) x=v0*((mk)/g) 4) x=v0*sqrt(k/m) 5) x=v0*(m/kg) 6) x=v0*sqrt((mg)/k) 7) x=(v0)^2/(2g) 8) x=v0*(k/(mg)) 9) x=(v0)^2/(2m) 10) x=v0*((mg)/k)
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Acylinder of mass m and radius r is rotating in a v-shaped groove with a constant angular velocity ω...
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