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ret mass of A r = 10m girl on rollar coaster m=36kg = 20m let total mass of sollar coaster with girl = M ha = 24.15m ho = 34.1m he-om VA = 15.7m/s Energy conservation between A and B 70 TI I r d + Mgha - I + Mg AB [VB = V VÅ + 2g Channel + VB = VVA - 29 (AB-hA) -V 15.72 - 249.8+ ( 34.1 -24.15) [VB = 7.17m/s) Atc ve = V VÅ +2g Cha-he) [from 0
V 15.72 + 249.8+(24.15-0) Ve = 28.8 m/s for circular motion of girl mg Ng=my 7 mg » No mg-mu B & No = 3689.8 - 36x7.172 * No = 168 N/= apparent weight as B for circular motion No-mg = mre of girl at → Ne = m (8 + Vej » Nc = 36(9.8 + 26.82 Ne M 20 Ne = 1645.632 N Ne = 1650N apparens oreight c
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