Question

A block with mass 0.382 kg is attached to a horizontal spring with spring constant k = 1.28 N/m on a frictionless surface. The block is pulled 0.753 m from equilibrium and released. (a) What is the amplitude of the block's motion? (b) What is its period? (c) How long after release does the block take to first return to its equilibrium position? (d) What is its speed at that position? {b. 3.43 s, d. 1.38 m/s}

a) A=0.753m

b) 3.43s

C)???

d)???

Answer #1

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Neglect friction. (Indicate the direction with the sign of your
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A block-spring system consists of a spring with constant
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. A block of mass 2.00 kg is attached to a horizontal spring
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from its equilibrium position and released from rest. Use
conservation of mechanical energy to determine the speed of the
block as it returns to equilibrium
(a) if the surface is frictionless
(b) if the coefficient of kinetic friction between the block and
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x be the displacement of the block from the position at
which the spring is unstretched. At t = 0 the block passes
through x = 0 with a speed of 3.40 m/s in the positive
x direction. What are the (a) frequency
and (b) amplitude of the block's motion
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k = 820 N/m. A block of mass m = 1.20 kg is
attached to the spring and rests on a frictionless, horizontal
surface as in the figure below
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5.40 cm from equilibrium and released. Find the potential energy
stored in the spring when the block is 5.40 cm from
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(b) Find the speed of the block...

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HINT
(a)
What is the elastic potential energy of the block-spring system
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J
(b)
If the block is now released and the surface is frictionless,
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