Question
When a 4.20-kg object is hung vertically on a certain light spring that obeys Hooke's law, the spring stretches 2.00 cm.
(a) If the 4.20-kg object is removed, how far will the spring stretch if a 1.50-kg block is hung on it?
0.714
cm
(b) How much work must an external agent do to stretch the same spring 4.00 cm from its unstretched position?
3.293

Image Transcription

When a 4.20-kg object is hung vertically on a certain light spring that obeys Hooke's law, the spring stretches 2.00 cm. (a) If the 4.20-kg object is removed, how far will the spring stretch if a 1.50-kg block is hung on it? 0.714 cm (b) How much work must an external agent do to stretch the same spring 4.00 cm from its unstretched position? 3.293

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Work,Power and Energy

Work,Power and Energy

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