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Physics

Mechanics

Easy

Question

$T w o space p o i n t space m a s s e s space c o n n e c t e d space b y space a n space i d e a l space s t r i n g space a r e space p l a c e d space o n space a space s m o o t h space h o r i z o n t a l space s u r f a c e space a s space s h o w n space i n space t h e space d i a g r a m. space A space s h a r p space i m p u l s e space o f space 10 space k g minus m divided by s space i s space g i v e n space t o space t h e 5 space k g space m a s s. space T h e space v e l o c i t y space o f space t h e space 10 space k g space m a s s space w i l l space b e$

$\frac{2}{3} m / s$
$\frac{1}{3} m / s$
$2 m / s$
$z e r o$

The correct answer is: $1 third m divided by s$

$10 space k g space m a s s space w i l l space g a i n space v e l o c i t y space a l o n g space t h e space s t r i n g space o n l y. space U sin g space m o m e n t u m c o n s e r v a t i o n space a l o n g space t h e space s t r i n g space space v equals fraction numerator 10 cos 60 degree over denominator 10 plus 5 end fraction equals 1 third m divided by s$

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PhysicsMechanics

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PhysicsMechanics

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PhysicsMechanics

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