Jule J.

asked • 11/13/20

pls help!! finding height by applying work energy theorem


  A block is released from rest at point A and slides down a curved slope to point B, then continues until it comes to rest at point C. There is no friction from point A to point B, but there is friction from point B to point C. It stops in a time t as it travels from B to C. The vertical height of A is h above point B, and point C is horizontal distance x from point B. (you can find a diagram of this by searching up this question, unable to insert image)


Write an expression for h. Your answer should be in terms of x, t, and g (9.80 m/s2). (Apply the work-energy theorem to the block’s motion from A to B.)


1 Expert Answer

By:

Jule J.

i cant add images on here i think only people answering the questions can. if you copy and paste the question into google and go to images you can find it though
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11/14/20

Dr Gulshan S.

tutor
Let me give a try to google
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11/14/20

Jule J.

did you find it?
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11/14/20

Dr Gulshan S.

tutor
Solved it on Wyzant portal. If you still have some question , get back to me any time . I will be willing to answer any time! Dr Gulshan S
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11/14/20

Dr Gulshan S.

tutor
h = vb^2/2g
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11/14/20

Jule J.

what is b? because it says to only use x, t, and g
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11/14/20

Jule J.

and you can't use v either
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11/14/20

Dr Gulshan S.

tutor
Vb is velocity at point B
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11/15/20

Dr Gulshan S.

tutor
Vb= sqrt 2gh
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11/15/20

Dr Gulshan S.

tutor
Use sqrt 2gh in place of vb
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11/15/20

Jule J.

oh yeah you are right thanks!
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11/15/20

Dr Gulshan S.

tutor
Ask me any time!
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11/15/20

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