Question

HOMEWORK 1) W = AEK = 2 2 I ung ² - 1 I W; ² 2) (EFP); - (Et Ep). 1 // IM cotton ten

Answer 1

→ work upon done by an externet borce F. particle the displacing from point I to point, '2' is not WIZ S² F. dr. so ogg کار) HP Fodr olm dr dr = at mar rat [dr= Erat at dr= ar at alat [ tra] aut 1] losirroronto d aut I my 2 dt o No resented 2 d (zmrzl The work done agot mr²- mri Tz - TV Wrang2 og f.dra

Here the undle 12 the Ta 1 W2 I Wgt 12 swizlifurt T = t mr2 = u vinutic energy anh sustem. body is rotanting this boru vinetic energy ther up the rotating body where (gova for rotating bocly Angulare on rewcity wis initial Angular relocity I= moment ab inertia Angular relverty. Wy final Fora conservative borce or JZ ont i dr 22r c (22v ozon sydz Vyf = 0, The force com be expressed as Fa ♡ - OV=- lino dy by = 22r (62 Szay 232) anoz e ondy The lvl is the potential energy which is depends on the position , 2 zv.dr = + syan) = called 2 2 dy dr Jf. dr 2 s dra Work Vior2 done by the bone W 12 = 7hF. dr = virra (W

ne post from ean. (1) 8 (u) =) (T2 - Tor = varr = W 12 gt. veure s! gorod Call ㅕ Ti + V2 Food Trston B usta nori E t (+)2 = (Tt), (Ev tep) = (Ene Ep); nony ) pritton conserned au binad initial of energy T