Physics Quiz 2 question PDF

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Physics'Quiz'2'(Trial'1)' 1. Person'(Diver)'changes'angular'velocity'by'tucking'in'hands'are'stretching'them'out.'Moment'of' inertia'when'tucked'in'is'___'and'moment'of'inertia'when'stretched'is'____.'If'the'diver'starts' with'stretching'hands,'by'what'factor'is'the'Kinetic'energy'changed?' ' 2. Moment'of'Inertia'of'spinning'wheel'is'___.'Radius'is'___.'An'object'is'pressed'against'the' spinning'wheel.'There'is'a'constant'Tangential'force'of'___N'acting'on'the'wheel.'How'long'will' it'take'for'the'spinning'wheel'to'come'to'rest'is'the'initial'angular'velocity'is'___.'' ' 3. The'weight'of'plank'is'wcm'and'weight'of'person'is'wman.'The'system'is'in'rotational'and' translational'equilibrium.'Draw'an'FBD'diagram.'Choose'an'appropriate'pivot'point'and'state' equations'for'rotational'and'translation'equilibrium.'DO'NOT'SOLVE.' ' '

1550'N'

T1' ' '

61°'

θ'

34m??' 20m??'...