Physics, 08.11.2019 21:31 eduardavezdemel
To measure a coefficient of kinetic friction we can use a spring with a known force constant. a block of mass m is sitting on a horizontal surface. the block is pushed against a horizontal spring with spring constant k, compressing it a distance d from equilibrium, and then released. when released, the block is free to slide across the surface and can detach from the spring. you observe that the block slides on the surface a total distance x from where it was released before coming to a stop. assuming the frictional force is uniform across the surface and m = 0.5 kg, k = 100 n/m, d = 0.3 m and x = 2.5 m: (a) what is the coefficient of kinetic friction µk between the block and the surface? (b) what is the speed of the block just as the spring returns to its equilibrium length and the block separates from the spring?
Answers: 3
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To measure a coefficient of kinetic friction we can use a spring with a known force constant. a bloc...
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