Question

Four identical spring each of spring constant k, are connected both in series and parallel as shown in V).

Answer 1

I know that the springs constant in series is given by 1/k=1/k+1/k=1/2k while in parallel its given by k=k+k=2k but how can i obtain k effective for all 4 springs

Answer 2

combine the 2 hat are in parallel first into one equivalent spring

then you have three in series, so combine those 3

Answer 3

i still dont get the logic behind why we are doing this?

Answer 4

do we treat the 4 spring as if they are a single one?

Answer 5

you have a rule for combining springs in series, and another rule for combining springs in parallel.

so use the latter rule first to combine those two parallel springs int an euivalent



the use the first rule to combine the 3 springs that in series