If you wanted to know the mass of an unknown object, would it be more helpful to use a pendulum, or a spring, and why?

diagram is missing, but i will try to explain your doubt.

answer:

amplitude is the maximum displacement or distance moved on a point of a vibrating body or wave measured from its equilibrium position.it is equal to half the length of vibration path.

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i just did this and got a 100.

not too sure thinking all accelerations are pointed down

the right answer is 0.3 meters per second