.Khi truc quay di qua trung di6rn cua thanh va thanh dang quay cleu vo'i toc do goc 0l tlii dat rlhg mQt vAt nho l€n mdt di€m tr€n thanh rdi dinh chit vaolhantr.. giet momen quan tfnh c[r]
Trang 1DE CHINH THLTC
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NAM EINH
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quay khi truc quay nim tai trung di6m cira thanh duc.rc x6c dinh bo.i cong thr,r'c I : + ni.() 1 ' )
Trang 2l .Khi truc quay di qua trung di6rn cua thanh va thanh dang quay cleu vo'i toc do goc 0l tlii dat
rlhg mQt vAt nho l€n mdt di€m tr€n thanh rdi dinh chit vaolhantr giet momen quan tfnh csa
vet d6i voi truc quay bang l/2 momen qudn tfnh cua tlanh Bo qua rnoi luc cdp Dgns ndns
cua h€ tdng hay gi6m bao nhi€u lAn so voi ban diu? t
2 ChAl hd truc toa cl6 Ox cung phu'ong.v6'i thanh, gdc toa dQ O tai trung di€rn cua thanh.
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b) Di6u chinh bi€n tro'd6 cdng su6t tiOu thu cua do4rr mach bdng 100 W Tim di€p rro.R khi cjo?
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dUng lon nhAt gifi'a hai di6m M vd N theo ll: Zr; Zg vd R? Xet c6c rruo.ng hop LC.d < 2
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trong.mach co dao dOng di€n til'ri6ng l'irn khodng tho'i gian ngSn nh6t tu' luc nOi hui bAn ru di€n 'o'i
hai ddu cu6n cAm d€n khi nang luo'ng dien tru'onglAp trung trJng tu Oier't t a"g
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