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  • As shown in the figure, a particle of mass 10 kg is placed at a point A. When the particle is slightly displaced to its right, it sta

As shown in the figure, a particle of mass 10 kg is placed at a point A. When the particle is slightly displaced to its right, it starts moving and reaches the point B. The speed  of the particle at B is x m/s. (Take g = 10 m/s2 ) The value of 'x' to the nearest is ___________.
Option: 1 10
Option: 2 20
Option: 3 40
Option: 4 15

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\begin{aligned} &\text { Using work energy theorem, }\\ &W _{ g }=\Delta K . E\\ &\text { (10) }( g )(5)=\frac{1}{2}(10) v ^{2}-0\\ &v =10 m / s \end{aligned}

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Deependra Verma

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