When a 020-Kg Block Is Suspended from a Vertically Hanging Spring, It

question 25

Multiple Choice

When a 0.20-kg block is suspended from a vertically hanging spring, it stretches the spring from its original length of 0.040 m to 0.045 m. The same block is attached to the same spring and placed on a horizontal, frictionless surface as shown. The block is then pulled so that the spring stretches to a total length of 0.15 m. The block is released at time t = 0 s and undergoes simple harmonic motion.
-Which one of the following statements is true concerning the motion of the block?

• A)Its acceleration is constant.
• B)The period of its motion depends on its amplitude.
• C)Its acceleration is greatest when the spring returns to the 5.0 cm position.
• D)Its velocity is greatest when the mass has reached its maximum displacement.
• E)Its acceleration is greatest when the mass has reached its maximum displacement.

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