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Oct 11 2013 07:59pm
1. At an outdoor market, a bunch of bananas attached to the bottom of a vertical spring of force constant 16.0 N/m is set into oscillatory motion with an amplitude of 20.0 cm. It is observed that the maximum speed of the bunch of bananas is 40.2 cm/s. What is the weight of the bananas in newtons?


2. A spring hangs vertically from a fixed support. A mass is then attached to the lower end of a spring. When this system undergoes simple harmonic motion, it has a period of 0.67 s. By how much is the spring stretched from its initial length when the mass and spring are hanging motionless?



3. pendulum with a length of precisely 1.000 m can be used to measure the acceleration due to gravity, g. Such a device is called a gravimeter.
(a) How long do 145 oscillations take at sea level, where
g = 9.81 m/s2?
(Give your answer to at least two decimal places.)
s

(b) Suppose you take a gravimeter to the top of a high mountain, where the value of g is 0.25% less than the value at sea level. How long do 145 oscillations take at the top of Mount Everest? (Give your answer to at least two decimal places.)
s






Quick 3 questions, should only take u about 5-10 mins to do all if you know what you are doing..
I need this done withint next 2-3 hours, i will pay 65 fg for all. I think there are on google, with different numbers, but I need correct answers.
It seems I can't do it.. Thank you
Member
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Oct 11 2013 08:16pm
1) 0.3885N

2) 0.11155m

3a) 290.88s
3b) 291.24s

I believe these to be correct.

This post was edited by Dontrunaway on Oct 11 2013 08:45pm
Member
Posts: 21,893
Joined: Mar 27 2009
Gold: 12,408.00
Oct 11 2013 08:47pm
Can't edit anymore. I can provide the work if you really need it.

I just used the simple harmonic oscillation equations and pendulum equation for last one, keeping track of units and manipulating equations etc. Pretty standard stuff, not even one page of work.

This post was edited by Dontrunaway on Oct 11 2013 08:51pm
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