Alex J.

asked • 01/10/22

Force of spring physics question

A spring is suspended from a ceiling and a 256-g mass is attached to it and pulled down to stretch the spring by 18.2 cm. The mass is released and travels through the equilibrium position with a speed of 0.746 m/s. Calculate the force constant of the spring.

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Roger N. answered • 01/10/22

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. BE in Civil Engineering . Senior Structural/Civil Engineer

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Alex J.

Hello, Thank you for the video! At the third position wouldn't the mass have gravitation potential energy as well as kinetic energy or will it only have kinetic energy?
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01/11/22

Roger N.

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At position 3 the gravitational potential energy cancels out because it exits on both sides of the equation. At that position, the kinetic energy is zero because the velocity is zero, and you end up with the potential energy of the spring 1/2 kd^2 at position 3.
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01/11/22

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