spring and gravity constant kel 14

8/11/2019 Spring and Gravity Constant Kel 14

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SPRING AND GRAVITY

CONSTANTGroup Hooke


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HOOKESMEMBER

Gugun Gunandar

Wahyudi Pratama

Ilham Dhiaputra

Sheila SakkyanandaVita Meilani

Zeri Raihanati


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BACKGROUND

Many kinds of motion repeat themself over and

over. Spring is an objectconnected to two masses

which applies an equal and opposite force to each

mass based primarily on the distance separating

the two masses. According to Hookes Law, if thestring given a force, lengthening of spring will same

with that force as long as the elasticity limit hasnt

exceed yet. In daily lifes, there are so many

Hookes Law applications. Such as in bed, sofa,even in a vehicle. So that, we need to learn about

that law clearly and the others daily applications.


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PURPOSES

Determines the spring constant by Hookes Law

Measures gravity acceleration with liquid pole

vibration


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BASICTHEORY

Vibration

Hookes Law

Liquid Pole

Simple Harmonic Motion


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Vibration is periodic back-and-forth motion of the

particles of an elastic body or medium, commonly

resulting when almost any physical system is

displaced from its equilibrium condition and allowed

to respond to the forces that tend to restoreequilibrium.

Vibration


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Simple Harmonic Motion

simple harmonic motion, in physics,

repetitive movement back and forth through an

equilibrium, or central, position, so that the

maximum displacement on one side of this

position is equal to the maximum displacement

on the other side.

The time interval of each complete vibration isthe same, and the force responsible for the

motion is always directed toward the

equilibrium position and is directly proportional

to the distance from it.


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Hookes Law


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HOWTOCALCULATEASPRINGCONSTANT

Hooke's Law states that the restoring force of a

spring is directly proportional to a small

displacement. In equation form, we write

where x is the size of the displacement and the

proportionality constant kis specific for each spring.And the minus sign shows that this force is in the

opposite direction of the force thats stretching or

compressing the spring.

F = -k x


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Hookeslaw is valid as long as the elastic material youre

dealing with stays elastic that is, it stays within its

elastic limit.If you pull a spring too far, it loses its stretchy

ability. When a spring stays within its elastic limit andobeys Hookeslaw, the spring is called an ideal spring.


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Liquid Pole

U pipe is one of the simplest associated vessel shaped

U. When U pipe filled with a certain kind of liquid, the

second liquid in the pipe has the same height, means to

follow the law relating vessel


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EXPERIMENTPROCEDURES

1. Weigh the mass of spring, bucket, and small loads withtechnical balance

2. Hang up the bucket in Spring and watch closely the pointerposition of it

3. Fill the bucket with load one by one. And write the load

position in each time4. then, put the load one by one until the mass of systemdecrease or even used up. Each time, watch closely thepointer position

5. Repeat the 2nd, 3rd, and 4thprocedures but vibrate the bucket.Watch closely the vibrate time t in several times; every

observation consists of 10 vibration6. Measure the length of Liquid Pole

7. Make the liquid position in different high, then liberate it.Measure T (Period) in 5 times (every t consists of 5 swings).T=t/5


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DATAPROCESSING


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GRAVITYCONSTANTFORMULA

g =

Where g is gravity constant, L is a length of pipe and

T is period.


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RESULTS

Mass of bucket : 64,7gram

Mass of loads :

M1 = 9,9gram

M2 = 10,1gramM3 = 10,1gram

M4 = 10,1gram

M5 = 9,7gram


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a. Determine the gravity (g) of liquid column


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b. Determine the constant of spring


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Count the gravity (g) of liquid column


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Count the constant of spring


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CONCLUSIONS

Hooke's Law says that the stretch of a spring is

directly proportional to the applied force. (Engineers

say "Stress is proportional to strain".) In symbols, F

= kx, where F is the force, x is the stretch, and k is

a constant of proportionality. If Hooke's Law iscorrect, then, the graph of force versus stretch will

be a straight line.


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THANK YOU


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REFERENCES

http://global.britannica.com/EBchecked/topic/545322/

simple-harmonic-motion

http://global.britannica.com/EBchecked/topic/627269/

vibration

http://www.dummies.com/how-to/content/how-to-

calculate-a-spring-constant-using-hookes-la.html

http://www.4physics.com/phy_demo/HookesLaw/Hoo

kesLawLab.html

http://www.youtube.com/watch?v=zqWvyJmIZgA

http://faculty.wwu.edu/vawter/PhysicsNet/Topics/Pres

sure/HydroStatic.html
http://global.britannica.com/EBchecked/topic/545322/simple-harmonic-motionhttp://global.britannica.com/EBchecked/topic/545322/simple-harmonic-motionhttp://global.britannica.com/EBchecked/topic/627269/vibrationhttp://global.britannica.com/EBchecked/topic/627269/vibrationhttp://www.dummies.com/how-to/content/how-to-calculate-a-spring-constant-using-hookes-la.htmlhttp://www.dummies.com/how-to/content/how-to-calculate-a-spring-constant-using-hookes-la.htmlhttp://www.4physics.com/phy_demo/HookesLaw/HookesLawLab.htmlhttp://www.4physics.com/phy_demo/HookesLaw/HookesLawLab.htmlhttp://www.4physics.com/phy_demo/HookesLaw/HookesLawLab.htmlhttp://www.4physics.com/phy_demo/HookesLaw/HookesLawLab.htmlhttp://www.dummies.com/how-to/content/how-to-calculate-a-spring-constant-using-hookes-la.htmlhttp://www.dummies.com/how-to/content/how-to-calculate-a-spring-constant-using-hookes-la.htmlhttp://www.dummies.com/how-to/content/how-to-calculate-a-spring-constant-using-hookes-la.htmlhttp://www.dummies.com/how-to/content/how-to-calculate-a-spring-constant-using-hookes-la.htmlhttp://www.dummies.com/how-to/content/how-to-calculate-a-spring-constant-using-hookes-la.htmlhttp://www.dummies.com/how-to/content/how-to-calculate-a-spring-constant-using-hookes-la.htmlhttp://www.dummies.com/how-to/content/how-to-calculate-a-spring-constant-using-hookes-la.htmlhttp://www.dummies.com/how-to/content/how-to-calculate-a-spring-constant-using-hookes-la.htmlhttp://www.dummies.com/how-to/content/how-to-calculate-a-spring-constant-using-hookes-la.htmlhttp://www.dummies.com/how-to/content/how-to-calculate-a-spring-constant-using-hookes-la.htmlhttp://www.dummies.com/how-to/content/how-to-calculate-a-spring-constant-using-hookes-la.htmlhttp://www.dummies.com/how-to/content/how-to-calculate-a-spring-constant-using-hookes-la.htmlhttp://www.dummies.com/how-to/content/how-to-calculate-a-spring-constant-using-hookes-la.htmlhttp://www.dummies.com/how-to/content/how-to-calculate-a-spring-constant-using-hookes-la.htmlhttp://www.dummies.com/how-to/content/how-to-calculate-a-spring-constant-using-hookes-la.htmlhttp://www.dummies.com/how-to/content/how-to-calculate-a-spring-constant-using-hookes-la.htmlhttp://www.dummies.com/how-to/content/how-to-calculate-a-spring-constant-using-hookes-la.htmlhttp://www.dummies.com/how-to/content/how-to-calculate-a-spring-constant-using-hookes-la.htmlhttp://www.dummies.com/how-to/content/how-to-calculate-a-spring-constant-using-hookes-la.htmlhttp://global.britannica.com/EBchecked/topic/627269/vibrationhttp://global.britannica.com/EBchecked/topic/627269/vibrationhttp://global.britannica.com/EBchecked/topic/545322/simple-harmonic-motionhttp://global.britannica.com/EBchecked/topic/545322/simple-harmonic-motionhttp://global.britannica.com/EBchecked/topic/545322/simple-harmonic-motionhttp://global.britannica.com/EBchecked/topic/545322/simple-harmonic-motionhttp://global.britannica.com/EBchecked/topic/545322/simple-harmonic-motionhttp://global.britannica.com/EBchecked/topic/545322/simple-harmonic-motion

spring and gravity constant kel 14

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