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STUDENTS WORK SHEET

Tittle : Center of Mass

Goals : Determining the center of mass from a regular object

Tools and Materials

• Karton

• Thread

• Pendulum

• Ruler 

Methods :

• Draw some symetries objects (triangle, rectangular, kite, circle, jajar genjang)

• Determine two oints in the side of the object and gi!e it a mark (oint " and

 oint #)

• $onnect the endulum with the thread and hang the on a ole%

• &ang the object in " oint, draw a !ertical line which is closed together with the

thread which ass through the " oint%

• &ang the object in # oint, draw a !ertical line which is closed together with the

thread which ass through the # oint%

• 'ark the intersection of two lines with oint %

•  ow, try to ut your finger in the intersection oint, is the object in the e*ulibrium

condition or not+

• f it-s a .yes/, it means that that oint is the center of mass of the object0

Observation TableNo Objet!s Na"e #it$re of the objet Center of Mass

10

20

30

40

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Conl$sions

10 #ased on the e5eriment of determining the center of mass for regular objects,

what do you know about center of mass+

20 6hat is the result of your e5eriment+

30 $omare the result you-!e got with the number in your te5t book, is it suitable+