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Mass going up an inclined plane with initial velocity Vo

  • Thread starter herardo
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  • #1
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1. Vo
Mass=m


2.So we tried two ways of doing this, one is by taking the y component of the i itial velocity and using that and the other by using the component of its weight parallel to the initial velocity.


They give conflicting answers.

For the left one it turns out to be t=Vosinθ/g

But for the right its t=Vo/gsinθ
received_463357710740654.jpeg
mVo/gsinθ
Any thoughts?
 

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  • #2
Orodruin
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You have not actually shown your ways translated into maths or how you translate your sketches to an equation to solve. You also have not stated what the actual question is.
 
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You have not actually shown your ways translated into maths or how you translate your sketches to an equation to solve. You also have not stated what the actual question is.
The question was how much time will it take for the box to stop up the incline
 
  • #4
Orodruin
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You still have not shown your actual attempt. Please note that this is required by forum rules.
 
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You still have not shown your actual attempt. Please note that this is required by forum rules.
Here
20180829_204200.jpeg
 

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  • #7
Orodruin
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Please read the homework guidelines.
Do not simply post images of the problem statement or your work.
Please make the effort to type up the problem statement and your work. Ask yourself "If I can't be bothered to spend my time typing it, why should they be bothered to spend their time reading it, much less responding to it?" Use images for supporting figures. You may, of course, attach an electronic copy of the problem statement in addition to the typed version. Indeed, if it's a complicated or long problem, you probably should, but you should always provide a typed version as well.

While posting images may be convenient for you, it's actually one of the most effective ways of getting your request for help ignored. Images are often too big, too small, rotated, upside down, out of focus, dimly lit, or of otherwise poor quality. Your handwriting may not be as easy to read as you think it is. Even when images are readable, they often make viewing and responding to a thread very inconvenient, particularly on a mobile device. Moreover, they're a hindrance to the helpers as portions of the problem statement or your work can't easily be quoted. Using images alone doesn't qualify as filling out the homework template, so your post may be deleted.
Also, the weight is not the only force that acts on the mass in the vertical direction.
 
  • #8
The force mg is not going to act on the object as depicted by you in the first case, the whole mg will not cause retardation in the object. Acceleration takes place because of a force, here, you have not correctly determined the force which will act on the object.
 

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