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A 8.40 kg object oscillates at the end of a vertical spring that has a spring constant of 2.45 multiply.gif 104 N/m. The effect of air resistance is represented by the damping coefficient b = 3.00 N·s/m.
(a) Calculate the frequency of the dampened oscillation.
Hz
(b) By what percentage does the amplitude of the oscillation decrease in each cycle?
%
(c) Find the time interval that elapses while the energy of the system drops to 2.00% of its initial value.
s
An 8.4kg crate is pulled 4.7m up a 30? incline by a rope angled 16? above the incline. What is the increase in thermal energy of the crate and incline
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