An atwood machine consists of two masses 7.1 and 8.7 , Ask an Expert

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Q. An Atwood machine consists of two masses, = 7.1 and = 8.7 , connected by a cord that passes over a pulley free to rotate about a fixed axis. The pulley is a solid cylinder of radius = 0.40 and mass 0.70 .Determine the magnitude of the acceleration of each mass.

Q. A bird lands on a bare copper wire carrying a current of 25 A. The wire is 8 gauge, which means that its cross-sectional area is 0.13 cm2.

(a) Find the difference in potential between the bird's feet, assuming they are separated by a distance of 5.5 cm.

(b) Will your answer to part (a) increase or decrease if the separation between the bird's feet decreases?

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