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partment ematics, and Statistics of Sharjah
205 ~ Quiz Vlll
Spring, ZOlO Name: ID# I Section# Q1. A mass weighing 64 pounds stretches a spring 0.32 foot. The mass
is initially released from a point 8 inches above the equilibrium position
with a downward velocity of 5 ft/s. a) F ind the equation of the motion b) What are the amplitude and period of the motion gfj’ «:ZSMQ/ ébfﬁé‘sﬂiq 32” (:23: m
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255%)” m V; Q2. A mass weighing 4 pounds is attached to a spring whose constant is
2 ib/ft. The medium offers a damping force that is numerically equal to the
instantaneous velocity. The mass is initially released from a point 1 foot
above the equilibrium position with a downward velocity of 8ft/s.
Determine the time at which the mass passes through the equilibrium
position. Find the time at which the which the mass passes through the
equilibrium position. Find the time at which the mass attains its extreme
displacement from the equilibrium position. What is the position of the
mass at this instant? } xii/r Uri—’3‘ x02 £th Wl’twm
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 Spring '11
 sadik
 Differential Equations, Equations

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