# Ratio help with further mechanics asap

#1
https://i.gyazo.com/b3eb3f93048fa9d4...e372fbc137.png
Really need help on this question please.
I tried to use the period equation for both of them but when I tried substituting e.g 2L it came out weird like root 2 outside because of surd rule.
0
4 weeks ago
#2
Is it b?
Last edited by 2022 g; 4 weeks ago
0
4 weeks ago
#3
Basically they want you to find “simple pendulum with a time period twice that of the

spring oscillations”
So the time period for the pendulum has to be twice that for the mass spring.
If you use 2L option. You would get root2T.
And if you use m/2 option. Which would give you root1/2T.
Then divide root2T with root1/2T and you would get 2.
Which should give you the answer they’re looking for.
So yeh i think its b.
0
#4
(Original post by 2022 g)
Basically they want you to find “simple pendulum with a time period twice that of the

spring oscillations”
So the time period for the pendulum has to be twice that for the mass spring.
If you use 2L option. You would get root2T.
And if you use m/2 option. Which would give you root1/2T.
Then divide root2T with root1/2T and you would get 2.
Which should give you the answer they’re looking for.
So yeh i think its b.
oh i managed to figure out by myself yesterday. yeah i done it by removing the constants out and taking only factors and finding the ratio of pendulum to the mass one and i got 2 for b
1
4 weeks ago
#5
Nicee
0
#6
(Original post by 2022 g)
Nicee
can you help me with a question please?

0
4 weeks ago
#7
(Original post by Behemouth)
can you help me with a question please?

Yeh i got c as my answer. (Pls tell me if im wrong)
How i did it is pretty much trial and error.
write the formula out for mass spring system.
You know from the formula that T is proportional to root m.
And if 1kg gives T
what value of mass will give you 1.5T
Hope this helps
1
#8
(Original post by 2022 g)
Yeh i got c as my answer. (Pls tell me if im wrong)
How i did it is pretty much trial and error.
write the formula out for mass spring system.
You know from the formula that T is proportional to root m.
And if 1kg gives T
what value of mass will give you 1.5T
Hope this helps
get it now, thank you i squared (1.5) squared and ignored constant. got 2.25 - 1= 1.25 needs to be added. hank you so much so much simpler
0
4 weeks ago
#9
(Original post by Behemouth)
get it now, thank you i squared (1.5) squared and ignored constant. got 2.25 - 1= 1.25 needs to be added. hank you so much so much simpler
No problem bro.
0
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