Question:medium
A 3.628 kg freight car moving along a horizontal rail road spur track at 7.2 km/hour strikes a bumper whose coil springs experiences a maximum compression of 30 cm in stopping the car. The elastic potential energy of the springs at the instant when they are compressed 15 cm is â
A 3.628 kg freight car moving along a horizontal rail road spur track at 7.2 km/hour strikes a bumper whose coil springs experiences a maximum compression of 30 cm in stopping the car. The elastic potential energy of the springs at the instant when they are compressed 15 cm is â
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Elastic potential energy in springs can be calculated using \( E = \frac{1}{2} k x^2 \), where \( k \) is the spring constant and \( x \) is the compression or extension.
Updated On: Apr 2, 2026
- \( 12.1 \times 10^4 \, \text{J} \)
- \( 121 \times 10^4 \, \text{J} \)
- \( 1.21 \times 10^4 \, \text{J} \)
- \( 1.21 \times 10^6 \, \text{J} \)
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The Correct Option is C
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