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$\bullet$ $\bullet$ When a piece of wood is pressed against a spring and com-presses the spring by $5.0 \mathrm{cm},$ the wood gains a maximumkinetic energy $K$ when it is released. How much kinetic energy(in terms of $K$ would the piece of wood gain if the spring werecompressed 10.0 $\mathrm{cm}$ instead?

4$K$

Physics 101 Mechanics

Chapter 7

Work and Energ

Physics Basics

Applying Newton's Laws

Kinetic Energy

Potential Energy

Energy Conservation

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No, we're going to solve problem 51 In this problem, we should First industry and the concept off spring potential energy When a blow it's pushed against spraying. Then the work done by the push on this spring is converted to the It's spring potential energy which is given us how gay ex The square there X is the deformation off by spring. Does the external work hits stores in the spring as its energy? After that, when this is spring is released then this This spring potential energy will convert to the kind of take energy off the bloke half a B square. This conversion off energy happens in every case there. External work is done on my spring and then spring is released. Now come to the question in the question it is given that first of all, the spring is compressed by five centimeters on serial 0.5 meters. The spring kinetic energy in the first case, this gay cause, uh, okay, next this square because can you take energy off the objectives that could do this spring potential energy. In the second case when they're the formation, X one is equal to two x on 10 centimeters, then we can, right. New kinetic energy as gay one equals. Uh, okay, X one squared this half. Okay, X one is square. This will give us Oh, okay, four next is square. This is not excellent. This is X. Does he get four? Okay. Hence the new kind of taken a G off. The object is equal to four times they need.

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