An m = 5.5kg box rests on a horizontal frictionless surface and is attached to a spring with spring constant k = 730 N/m. The spring is fixed at its other end and is initially at its natural (uncompressed) length. A horizontal force of F = 45 N is now applied to the box in a direction which extends the spring. [Recommended time: 10-12 minutes] a) The work done by the force, F. when the box has moved Ax = 10 cm is (J) a. 4.50 b. 4500 c. 730 d. 0.50 b) The potential energy of the spring when the box has moved Ax = 10 cm. (J) а. 36.50 b. 3.70 с. 12.20 d. 0.10

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Chapter1: Units, Trigonometry. And Vectors
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An m = 5.5kg box rests on a horizontal frictionless surface and is attached to a spring with
spring constant k = 730 N/m. The spring is fixed at its other end and is initially at its natural
(uncompressed) length. A horizontal force of F = 45 N is now applied to the box in a
direction which extends the spring. [Recommended time : 10-12 minutes]
a) The work done by the force, F. when the box has moved Ax = 10 cm is (J)
a. 4.50
b. 4500
c. 730
d. 0.50
b) The potential energy of the spring when the box has moved Ax = 10 cm. (J)
a. 36.50
b. 3.70
c. 12.20
d. 0.10
Transcribed Image Text:An m = 5.5kg box rests on a horizontal frictionless surface and is attached to a spring with spring constant k = 730 N/m. The spring is fixed at its other end and is initially at its natural (uncompressed) length. A horizontal force of F = 45 N is now applied to the box in a direction which extends the spring. [Recommended time : 10-12 minutes] a) The work done by the force, F. when the box has moved Ax = 10 cm is (J) a. 4.50 b. 4500 c. 730 d. 0.50 b) The potential energy of the spring when the box has moved Ax = 10 cm. (J) a. 36.50 b. 3.70 c. 12.20 d. 0.10
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