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Physics - SHM Question with Solution | TestHub

PhysicsSHMOscillations and SHMHard2 min

PhysicsHardnumerical

A 20 N block hangs from a spring of constant 400 N/m and oscillates vertically. Its kinetic energy is 3.0 J at the point where the spring is unstretched. Find its maximum kinetic energy, in J ( $g = 10$ ).

Answer:

3.50

Solution:

Equilibrium extension = $20/400 = 0.05$ m. $K E_{ma x} = 3 + 20 (0.05) - \frac{1}{2} (400) 0.05^{2} = 3 + 1 - 0.5 = 3.5$ J.

Subject:PhysicsTopic:SHMSubtopic:Oscillations and SHM

⏱ 2m

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