Mathematics

Mathematics, 03.07.2019 12:30, cedricevans41p4j3kx

By what distance, x2, should the second child compress the spring so that the marble lands in the middle of the box? (assume that height of the box is negligible, so that there is no chance that the marble will hit the side of the box before it lands in the bottom.)]

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Physics, 26.06.2019 19:00, Kimmie2019

The magnitude of the force required to compress an imperfect horizontal spring a distance x is given by f=kx+bx3 where k = 120 n/m and b = 18 n/m3. if you use a 3.5-kg block to compress the spring a distance of 2.2 m and then let it go, what speed will the block have when it leaves the spring? assume the surfaces are smooth enough that any frictional forces can be neglected.

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Physics, 22.08.2019 22:30, 001035783

Abrick of mass m = 0.21 kg is set against a spring with a spring constant of k1 = 690 n/m which has been compressed by a distance of 0.1 m. some distance in front of it, along a frictionless surface, is another spring with a spring constant of k2 = 489 n/m. (a) how far d2, in meters, will the second spring compress when the block runs into it? (b) how fast v, in meters per second, will the block be moving when it strikes the second spring? (c) now assume friction is present on the surface in between the ends of the springs at their equilibrium lengths, and the coefficient of kinetic friction is ? k = 0.5. if the distance between the springs is x = 1 m, how far d2, in meters, will the second spring now compress?

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Physics, 23.09.2019 20:00, aaron0828

The force f required to compress a spring a distance x is given by f 2 f0 5 kx where k is the spring constant and f0 is the preload. determine the work required to compress a spring whose spring constant is k 5 200 lbf/in a distance of one inch starting from its free length where f0 5 0 lbf. express your answer in both lbf·ft and btu.

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Physics, 19.10.2019 00:10, NEUROPHARMACOLOGICAL

Neil and gus are having a competition to see who can launch a marble highest in the air using their own spring. neil has a firm spring (kneil = 50.8 n/m), but it can be compressed only a maximum of yneil, max = 14.0 cm. gus’s spring is less firm than neil’s (kgus = 12.7 n/m), but its maximum compression is greater (ygus, max = 27.0 cm). given that the mass of the marble is 4.5 g and ignoring the effects of air resistance, who can launch the marble the highest and what is the winning height? assume the marble starts from the same height, in both cases when the springs are at maximum compression.

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