Question

Help

Answer 1

B

Answer 2

good

Answer 3

same formula, this time you're solving for k

*** make sure to convert cm to m though

Answer 4

** actually don't convert cm to m b/c the units are still in cm for the force constant

Answer 5

D

Answer 6

6 = k(33)

k = ?

Answer 7

B

Answer 8

6/33 = 0.18 (A)

Answer 9

Hm. I had to look this one up and sources say it's b/c of gravity (A)

Answer 10

which makes sense b/c gravity is the restoring force

Answer 11

well if you think about the force equation

F = kx

k = F/x

so the numerator has to be a force unit (usually N) and the denominator has to be a unit of distance

so what's the best choice?

Answer 12

D

Answer 13

awesome, D

Answer 14

you are given k and x, find U

Answer 15

i got 1.29

Answer 16

u=(1)/(2)(115)0.15^(2)

Answer 17

u=1.29

Answer 18

good, so (A) with rounding

Answer 19

so at either end (5 and -5) the spring has the least kinetic energy + most potential energy

it naturally follows that it has the least potential + most kinetic energy at the center (0 cm) which is point C

Answer 20

F = kx, you're given k and F, find x

Answer 21

c

Answer 22

F = kx

8 = (44)x

x = ?

Answer 23

x = 8/44 = 0.18 (D)