The lubrication of bone joints is a subject of ongoing medical research. two bones connected at a joint do not touch. the bones are covered in articular cartilage, and are surrounded by lubricating synovial fluid. rheumatoid arthritis results in overproduction of synovial fluid, swollen joints, and difficult and painful movement. other joint disorders degrade the synovial fluid, directly increasing the friction between the bones, resulting in painful motion.
part a
to measure the effective coefficient of friction in a bone joint, a healthy joint (and its immediate surroundings) can be removed from a fresh cadaver. the joint is inverted, and a weight is used to apply a downward force
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Physics, 22.06.2019 10:00
Which atomic model was proposed as a result of j. j. thomson’s work?
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Physics, 22.06.2019 12:50
Assume you measured the mass of the cart to be (500 ± 1) g and the mass of the additional mass you put on the cart to be (500 ± 1) g as well. since the scale you are using in the lab cannot measure objects heavier than 600g you will have to sum up individual pieces and propagate the error. so what would be the mass and the standard error of the cart and the mass
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Physics, 22.06.2019 13:30
If the spring constant k of a pogo stick is 3500 n m and the weight of the person on the pogo stick is 700 n, how much is the spring in the botom of the pogo stick compressed?
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Physics, 22.06.2019 16:40
An owl dives toward the ground with a constant velocity of 4.40 m/s at 53.0° below the horizontal. the sun is directly overhead and casts a shadow of the owl directly below it. what is the speed (in m/s) of its shadow on level ground?
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The lubrication of bone joints is a subject of ongoing medical research. two bones connected at a jo...
Mathematics, 21.03.2020 01:54
Mathematics, 21.03.2020 01:54
Mathematics, 21.03.2020 01:54
Mathematics, 21.03.2020 01:54
Mathematics, 21.03.2020 01:54
Physics, 21.03.2020 01:54
Physics, 21.03.2020 01:55