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An object of mass 40 kg is raised to a height of 5 m above theground. What is its potential energy? If the object is allowed tofall, find its kinetic energy when it is half-way down. |
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Answer» Answer:As we know that , Potential energy =mgh Take g= 10 m/s^2 Now , P.E = 40 ×10×5 =2000J And K.E at half way = mgh Where H is half means 2.5 K.E = 40 ×10×2.5 = 1000 J Explanation: Here ,J is joule that is unit of WORK done.And at the end K.E is equal to P.E so I took K.E equal to mgh If answer is WRONG or I went SOMEWHERE wrong just LET me know |
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