Mechanics Questions Help! (1 Viewer)

[a1079atw]

Hi all,

Can anyone please show me how to do these two questions? For both I used dv/dt but got stuck after I found t:
t for Question 6: t= (1/2ku²)-(1/2kv²)
t for Question 8: t= (1/kc)[arctan(v/c)-arctan(2)]




Thanks in advance!

 

[Sy123]

 

[a1079atw]

Ah I see⋯ thank you!