http://s29.postimg.org/g0nv0mmo7/13_6.gif 1)A mass of 0.16 kilogram can glide fr
ID: 2245545 • Letter: H
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1)A mass of 0.16 kilogram can glide freely on an airtrack. It is attached to a spring (k=64 N/m) and oscillates back and forth with an amplitude of 0.3 meters. What is the kinetic energy at a distance of 0.15 meters from the equilibrium?
2)At t=0, the mass is found in the equilibrium position x=0 with a velocity of 6 m/s to the right. Which is the correct equation of motion?
x(t)=0.3m
A mass of 0.16 kilogram can glide freely on an airtrack. It is attached to a spring (k=64 N/m) and oscillates back and forth with an amplitude of 0.3 meters. What is the kinetic energy at a distance of 0.15 meters from the equilibrium? At t=0, the mass is found in the equilibrium position x=0 with a velocity of 6 m/s to the right. Which is the correct equation of motion? When does the oscillator have maximum acceleration?Explanation / Answer
from conservation of energy
Kintic energy +0.5kx^2 =0.5KA^2
kinetic energy =0.5k(A^2-x^2)
KE= 0.5*64(0.3^2-0.15^2)=2.16 J
2)
answer:
x(t)=0.3m
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