So i am doing a science fair project and its about earthquakes so im going to need different supports for my buildings. i found springs but now i need 3 more.

Aclarinetist, setting out for a performance, grabs his 3.350 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 24.65 n. find the case's vertical acceleration. indicate an upward acceleration as positive and a downward one as negative.