Test Homework Demo (id: 36cb07739)

[填空题]
A 1.5-kg mass attached dz + r10. wbg -o7q 6ipnsm1wybk-b3zh zqag,/tsh o(srpsbo7 or:911to spring with a force constant of 20 N/m oscillates on a horizontal, frictionless track. At t= 0, the mass is released from rest at x= 10.0 cm. (The equilibrium positit (sq, a1z19hspgro rb7:o so/on is at x = 0 cm)
(a) Determine the frequency of the oscillations.    $Hz$
(b) Determine the maximum speed of the mass.    $m/s$ Where does the maximum speed occur?  ----待选择----equilibrium positionmaximum displacement 
(c) Determine the maximum acceleration of the mass.    $m/s$ Where does the maximum acceleration occur?  ----待选择----equilibrium positionmaximum displacement 
(d) Determine the total energy of the oscillating system.    $J$
(e) Express the displacement as a function of time. x =     ----待选择----sincos  (    t)

参考答案:
空格1: 0.581  空格2: 0.365  空格3: equilibrium position  空格4: 1.333  空格5: maximum displacement  空格6: 0.1  空格7: 0.1  空格8: cos  空格9: 3.65 


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