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Physics, 28.11.2019 00:31 alexandria3498
Two kids create a makeshift seesaw by setting a 4-m long uniform plank on a saw horse. the saw horse is 0.5 m to the left of the center of mass of the plank. the child of mass m1 = 42 kg sits at the left end of the plank. the child of mass m2 = 31 kg sits 1 m to the right of the center of mass of the plank. what is the mass of the plank?
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Physics, 22.06.2019 13:30, kuddlebugsmommy
The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?
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Two kids create a makeshift seesaw by setting a 4-m long uniform plank on a saw horse. the saw horse...
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