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23 Nov 2019
1) You accelerate your car from rest at a constant rate downastraight road, and reach 22.0 m/s in 117 s. The tires on yourcarhave radius 0.320 m. Assuming the tires rotate inacounterclockwise direction, what is the angular acceleration ofthetires?
2) A pulley has aradius of 2.70 m and a moment of inertia of39.0 kg·m2. Thehanging mass is 4.20 kg and it exerts a forcetangent to the edgeof the pulley. What is the angular accelerationof thepulley? 3) A pulley is uniform disk of mass 2.8 kg and radius0.24 m,which is free to rotate without friction. The mass of theblock is1.2 kg. Downward and clockwise are negative directions.(a) What isthe angular acceleration of the pulley? (b) What is theaccelerationof the falling block? 4) A pulley Ca is a uniform disk of mass 2.40 kg andradius0.220 m. The block applies a contant torque to the pulley,which isfree to rotate without friction, resulting in anangularacceleration of magnitude 0.180 rad/s2 for the pulley. Asthe blockfalls 0.500 m, how much work does it do on thepulley?
1) You accelerate your car from rest at a constant rate downastraight road, and reach 22.0 m/s in 117 s. The tires on yourcarhave radius 0.320 m. Assuming the tires rotate inacounterclockwise direction, what is the angular acceleration ofthetires?
2) A pulley has aradius of 2.70 m and a moment of inertia of39.0 kg·m2. Thehanging mass is 4.20 kg and it exerts a forcetangent to the edgeof the pulley. What is the angular accelerationof thepulley?
3) A pulley is uniform disk of mass 2.8 kg and radius0.24 m,which is free to rotate without friction. The mass of theblock is1.2 kg. Downward and clockwise are negative directions.(a) What isthe angular acceleration of the pulley? (b) What is theaccelerationof the falling block?
4) A pulley Ca is a uniform disk of mass 2.40 kg andradius0.220 m. The block applies a contant torque to the pulley,which isfree to rotate without friction, resulting in anangularacceleration of magnitude 0.180 rad/s2 for the pulley. Asthe blockfalls 0.500 m, how much work does it do on thepulley?
Elin HesselLv2
7 Sep 2019
