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Volume I of BR physics
page 216, #53.
in experiment 1, with his arms outstretched, the student drops the weights. this will cause the angular velocity of the student to:
increase
decrease
remain the same
i think increase, the answer says remain the same because the inertia of the system doesnt change. are you kidding me? if he dropped the weights, doesnt that means the system weighs less and therefore has less inertia?
page 265, #61. a mass collides with another mass which is connected to a spring. there is no friction. now assume there is friction. the friction decreases the subsequent speed of oscillation.
what is speed of oscillation? isn't that frequency? if it is, in the equation for frequency, which is something like 1/2pi m/k or whatever, it seems like the speed should depend on m and k only. no?
longitudinal and transverse waves. I cannot understand whats the difference, no matter how many websites i go to, no matter how many physics books i look up. It seems like the difference is that something is parallel to something else in long and something is perpendicular to something else in transverse???
page 216, #53.
in experiment 1, with his arms outstretched, the student drops the weights. this will cause the angular velocity of the student to:
increase
decrease
remain the same
i think increase, the answer says remain the same because the inertia of the system doesnt change. are you kidding me? if he dropped the weights, doesnt that means the system weighs less and therefore has less inertia?
page 265, #61. a mass collides with another mass which is connected to a spring. there is no friction. now assume there is friction. the friction decreases the subsequent speed of oscillation.
what is speed of oscillation? isn't that frequency? if it is, in the equation for frequency, which is something like 1/2pi m/k or whatever, it seems like the speed should depend on m and k only. no?
longitudinal and transverse waves. I cannot understand whats the difference, no matter how many websites i go to, no matter how many physics books i look up. It seems like the difference is that something is parallel to something else in long and something is perpendicular to something else in transverse???