A Pendulum Of Mass 2kg Is Given An Energy Of 200J Then The Maximum Height It Will Reach Is ____

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Editor Staff asked 1 year ago

A pendulum of mass 2kg is given an energy of 200J then the maximum height it will reach is _____

(a) 25m

(b) 20m

(c) 15m

(d) 10m

The question was posed to me in final exam.

My question is from Kinetic Energy topic in chapter Work, Energy and Power of Physics – Class 11
Select the correct answer from above options
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Question Tags: physics–class 11 oscillations simple-harmonic-motion

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Editor Staff answered 1 year ago

Correct answer is (d) 10m

The explanation is: Let the value of g = 10ms^-2. At the highest point, the kinetic energy gets converted in to potential energy so, 200 [kgm^2s^-2] = 2*10*h [kgms^-2]. This gives h = 10m.

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