A 48-Kg Block Attached to an Ideal Spring Executes Simple Harmonic

question 17

Multiple Choice

A 4.8-kg block attached to an ideal spring executes simple harmonic motion on a frictionless horizontal surface. At time t = 0.00 s, the block has a displacement of $- 0.90 \mathrm {~m} ,$ a velocity of $- 0.80 \mathrm {~m} / \mathrm { s }$ and an acceleration of $+ 2.9 \mathrm {~m} / \mathrm { s } ^ { 2 }$ The force constant (spring constant) of the spring is closest to

• A)15 N/m.
• B)14 N/m.
• C)13 N/m.
• D)12 N/m.
• E)11 N/m.

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Definitions:

Paired T-test

An analytical technique that contrasts the averages of two connected groups to ascertain if their difference is statistically significant.

Significance Level

In statistics, a threshold of probability set for rejecting the null hypothesis, indicating the strength of the evidence against the null hypothesis.

Mean Difference

The average of differences between pairs of observations in a dataset.

Standard Deviation

A statistic that measures the dispersion of a dataset relative to its mean and is calculated as the square root of the variance.