Question

Please see the attachment! (The answer's A, but I don't understand why it can't be E?)

Answer 1

Question: Which quantity would always be greater if the block oscillated with a smaller force constant?

Answer 2

Are you sure the answer is (A)?

I think it should be (D).

Answer 3

It says A in the answer sheet, and even my tutor was a bit confused as to how A came up. How is it D?

Answer 4

yea the answer is A which is correct..

if you have a very high force constant, then the amplitude would be smaller and low force constant gives higher amplitude

Answer 5

imagine you have a STIFFFFFFFFFFFFFFFF spring, and you have a very springgggggggggggy spring and you disturb both fo them

Answer 6

you can almost feel that springy one will oscillate with high amplitude and stiff one with low amplitude right?

Answer 7

Yeah...

Answer 8

Okay.. :)

Answer 9

ok.. now think of this..
if u put energy into the spring, then spring oscillation should also have the same energy right?

so how would total energy of oscillation change?

Answer 10

It would stay the same?

Answer 11

shouldn't it? don't you believe in law of conservation of energy? :D

Answer 12

I took amplitude as reference :(

Answer 13

Oh yeah of course!

Answer 14

what you mean amplitude of reference man? :D

Answer 15

but..

since force constant changes, then even the frequency of oscillation would change.. so even that should be the answer :D..


but i could keep the frequency same by increasing the mass accordingly

Answer 16

Ohh, which is why frequency won't be the answer right?

Answer 17

the question is a little absurd if you ask me.. look at option D
that doesn't even make sense.. position of the block? what are they even trying to tell? :D

Answer 18

I had to take something as a reference to see what would happen if we change k. Somehow I unknowingly took that reference to be amplitude (like you are taking energy).

I think we should take a quantity which is not present in the options (or a quantity which gives a unique answer).

Or maybe we need to see the complete question. :P

Answer 19

we should take a quantity which we believe in.. :P..
i believe in conservation of energy and momentum.. so some of mechanics problems can be easily tackled using these..

Answer 20

I believe in nothing; so what should I take..opium :P

Answer 21

i guess i need a little more experience to answer that question :D

Answer 22

@priyanka8
Can you upload the complete question ??

Answer 23

I've written some things on it so sorry about that, but here it is!

Answer 24

ahh.. ok.. so you got it right?

Answer 25

Yep, I've got it now, thank you so much for your help! :)

Answer 26

"It's not that I'm so smart, it's just that I stay with problems longer." - ∀lbert ∃instein

Answer 27

:D

Answer 28

are you sure he said that? :p

Answer 29

I'll confirm in after life :P