- #1

yecko

Gold Member

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## Homework Statement

A mass of 2.0 kg hangs from a spring with a force constant of 50 N/m. An oscillating force F = (4.8 N) cos[(3.0 rad/s)t] is applied to the mass. What is the amplitude of the resulting oscillations? Neglect damping. Answer: 0.15 m

## Homework Equations

F=kx , the mass only change the equilibrium position, amplitude is when max F thus cos is equal to 1

## The Attempt at a Solution

F=4.8N, k=50N/m

x=F/k

=4.8/50

=0.096m.

What's wrong with my calculation? Thanks