In the Figure, Two Identical Ideal Massless Springs Have Unstretched

question 58

Multiple Choice

In the figure, two identical ideal massless springs have unstretched lengths of 0.25 m and spring constants of 700 N/m. The springs are attached to a small cube and stretched to a length L of 0.30 m as in Figure A. An external force P pulls the cube a distance D = 0.020 m to the right and holds it there. (See Figure B.) The external force P, that holds the cube in place in Figure B, is closest to

• A) 28 N.
• B) 25 N.
• C) 21 N.
• D) 18 N.
• E) 14 N.

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Definitions:

Equal Amount

A quantity that is the same in size, number, or value when compared to another.

Compounded Quarterly

The process of calculating and adding interest to a principal sum four times a year, leading to compound growth in the interest amount.

Future Value

The projected value of an investment at a future point in time, factoring in specifics like interest rates and compounding periods.

Quarterly

Pertaining to or occurring every quarter, a three-month period, often used in financial and business reporting.