Question
In: Physics
Q.1 A pendulum has a length 701 cm and damping constant k=0.4 .The bob is released...
Q.1
A pendulum has a length 701 cm and damping constant k=0.4 .The
bob is released from rest at a starting angle of =0.2. Find the
period of the equation of motion of the pendulum. Use g=9.8m/s^2.
Express your answer in three decimal places.
Q.2
A mass of 0.2kg stretches a spring by 9.8 cm. The damping
constant is c=0.2 . External vibrations create a force of
F(t)=0.8sin5t Newtons ,setting the spring in motion from its
equillbrium position with zero velocity. Which of the following
differential equations describe the given spring mass system?
• u"+u' + 100u =0
•u" + u' + 100u = 4 sin (5t)
•u" + u' + 1000u = 4 sin (5t)
•u" + u' + 100u = 0.8 sin (5t)
Solutions
genius_generous answered 2 years agoRelated Solutions
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The figure shows a pendulum of length L = 2.6 m. Its
bob (which effectively has all the mass) has speed
v0 when the cord makes an angle
θ0 = 42° with the vertical.
(a) What is the speed of the bob when it is in its
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