Homework Answers
given energy E = 146 J
spring constant k = 106 N/m
so elastic potential energy = 1/2kx^2
1/2kx^2 = 146
x^2 = 2*146/106 = 2.75
x = sqrt(2.75) = 1.66 m
so option b is the correct answer
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have a spring with a spring constant 4070
N/m.
50% Part
(a) If you want to store
235
J of energy in this spring, should you compress it or stretch
it?
50% Part
(b) How far, in centimeters,
would you have to compress this spring to store this
energy?
An undamped 1.97 kg horizontal spring oscillator has a spring constant of 38.8 N/m. While oscillating, it is found to have a speed of 2.08 m/s as it passes through its equilibrium position. What is its amplitude A of oscillation? A = m What is the oscillator's total mechanical energy Etot as it passes through a position that is 0.616 of the amplitude away from the equilibrium position? Etot = J
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