Question

**Consider a block attached to a horizontal spring that
undergoes simple harmonic motion as shown with an amplitude of A
=10 cm**

**If the kinetic energy of the block is increasing the
block must be**

**(a) moving away from the equilibrium
position**

**(b) moving towards the equilibrium position**

**c) at equilibrium position**

**(d) maximum displacement**

Answer #1

At the extreme position ,the velocity of the block is zero and so the Kinetic energy is zero

At the equilibrium position , the velocity is maximum and so the kinetic energy is maximum

So, When the block move towards the equilibrium position kinetic energy is increasing and when moves away from the equilibrium position kinetic energy is decreasing

Option (b) is the correct answer

Kinetic energy is increasing when moving towards the equilibrium position.

5. A mass attached to a spring
undergoes a simple harmonic motion (SHM) on a frictionless
horizontal surface. Suppose you increase the amplitude of the SHM,
which of the following quantities DOES (DO)
NOT increase? (There can be more than one answer)
1. The period of the SHM
2. The maximum acceleration
3. The frequency of the SHM
4. The maximum kinetic energy
5. The maximum spring potential
energy
6. The maximum speed.

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A block of unknown mass is attached to a spring with a spring
constant of 5.50 N/m and undergoes simple harmonic motion with an
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(a) Calculate the mass of the block.
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(c) Calculate the maximum acceleration of the block.

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kg
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Part A
A block of unknown mass is attached to a spring with a spring
constant of 5.50 N/m and undergoes simple harmonic motion with an
amplitude of 10.0 cm. When the block is halfway between its
equilibrium position and the end point, its speed is measured to be
28.0 cm/s.
(a) Calculate the mass of the block.
________kg
(b) Calculate the period of the motion.
________s
(c) Calculate the maximum acceleration of the block.
________m/s2
Part B
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