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Posted

epeidi paidia 8elw kapou na ta lew kai epeidi kapoia paidia isws 8eloun an poun pws egrapsan stis exetaseis lew na arxisw ayto to topicaki kai opoios exei orexi as pei gia tis epityxies t ...:P egw simero egrapsa physica poli eykola mas valane gia omala etavallomeni kinisi kai episis gia dinameis/energeies askiseis..eixe kai swsto i la8os (3 mono):P kai na dwsoume monades sta mege8i...

Posted

Epeidh h fisiki htan apo ta agaphmena mou... Gia na doume pio asteri tha mas lisei afto :)

 

Swma mazas m einai demeno sto elefthero akro orizodiou idanikou elatiriou statheras k = 10stonkibo N/m to allo tou opoiou einai stereomeno se stathero katakorifo toixo... To sistima ektelei ameiwti apli armoniki taladwsi kata ti diarkeia tis opoias to swma dierxete 200 fores apo ti thesi isorropias tou se xrwniko diastima Δτ = 10π s Gnwrizoume oti ti xroniki stigmi t = 0 h kinitiki energeia tou swmatos einai triplasia tis dinamikis tou energeias kai epishs oti gia t = 0 einai x > 0 kai υ < 0 Me dedomeno oti an to platos taladwshs htan diplasio tote h megisti kinitiki energeia tou swmatos htan megaliteri kata 60 J, na ipologisete ti maza m tou swmatos

 

Sas edwsa parapanw plirofories alla to zhthma afto eixe kialles erwtiseis tis opoies paralipw... Mhn balw kai kati pooooooooooooooli diskolo ^^

 

Enas typos kai na balete to mialo sas na doulepsei gia 1 poso einai ps :P Tha to pari to potami to bradi :P

Posted

Pf, siga afta ta kserei kai i koutsi Maria opws leme ;D

 

Pou na ebaza kai kati diskolo dld ^^ px. na mou vriskate tin arxikh fash ths taladwsis...

 

As to parei to potami loipon...

 

Afou to swma se Δτ = 10π s dierxete 200 fores apo ti thesi isoropias right? Opote N = 100 plhreis taladwseis se xrono Δτ. Etsi gia ti sixnothata taladwseis exoume...

 

f = n/Δτ ~> f = 100/10x ~> x = 10/π Hz

 

OPOTE

 

f = 1/T ~> f= 1/2π V-(riza einai afto  )k/m ~> m = k/ 4π(τετράγωνο)f(τετράγωνο) ~> m = 2.5kg

 

xa0xa0x0a killer owned :P m dose tin lisi prin ti grapsi :D

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