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Solved: An energy-absorbing car bumper has a spring
Chapter 5, Problem 68GP(choose chapter or problem)
Problem 68GP
An energy-absorbing car bumper has a spring stiffness constant of 550 kN/m. Find the maximum compression of the bumper if the car, with mass 1500 kg, collides with a wall at a speed of 2.2 m/s (approximately 5 mi/h). [Hint: Use conservation of energy.]
Questions & Answers
QUESTION:
Problem 68GP
An energy-absorbing car bumper has a spring stiffness constant of 550 kN/m. Find the maximum compression of the bumper if the car, with mass 1500 kg, collides with a wall at a speed of 2.2 m/s (approximately 5 mi/h). [Hint: Use conservation of energy.]
ANSWER:
Step 1 of 2
The potential energy stored in the spring is equal to the initial kinetic energy of the spring.