Determine kinetic energy gained by the mass during the acceleration

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Discussion Overview

The discussion revolves around a homework problem related to a mechanical system involving the acceleration of a mass on an inclined plane. Participants are addressing the calculation of distance moved, potential energy gained, velocity, and kinetic energy during the acceleration, while the original poster expresses a lack of prior physics knowledge.

Discussion Character

  • Homework-related
  • Technical explanation

Main Points Raised

  • The original poster seeks assistance with a physics exam question involving a 50 kg mass being uniformly accelerated up a 30-degree incline.
  • Some participants emphasize the importance of listing relevant equations and showing work, as per forum rules.
  • One participant suggests drawing a force diagram to identify the normal and tangential forces acting on the mass, indicating that understanding the forces is crucial for solving the problem.
  • There is a correction regarding the spelling of "physics," which some participants note as part of the discussion.

Areas of Agreement / Disagreement

Participants generally agree on the need for the original poster to understand the underlying concepts and equations, but there is no consensus on specific methods or solutions to the problem presented.

Contextual Notes

The discussion highlights the original poster's unfamiliarity with physics concepts and the necessity of understanding force diagrams and friction in solving the problem. There are no resolved mathematical steps or definitive solutions provided.

Who May Find This Useful

Students new to physics or those preparing for exams involving mechanics and inclined planes may find this discussion relevant.

The Futur
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Homework Statement


I need help on my Mechanical system exam question.

(b) A mass of 50 kg. is to be uniformly accelerated from rest up a plane inclined at 30(deg) to the horizontal, by a force parallel to the plane. The acceleration rate is 1m/s2 for a period of 6 seconds. If the coefficient of friction between mass and plane is 0.2 (both static and kinetic),

Determine.


(ii) The distance the mass moves up the slope during the acceleration and the potential energy gained

(iii) The velocity and kinetic energy gained by the mass during the acceleration


The problem is that i never done phisics befor and i would be more than happy if you guys help me passing my exam. it's 3am now and I am still studying. thanks
 
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The Futur: The PF rules state we are not allowed to tell you how to approach or solve your homework or exam problem. You must list relevant equations yourself, and show your work; and then someone might check your math.
 
nvn said:
The Futur: The PF rules state we are not allowed to tell you how to approach or solve your homework or exam problem. You must list relevant equations yourself, and show your work; and then someone might check your math.

Yeah i do understand what you mean. there come the problem, i don't know what equation i have to use. as i said i never done phisics befor
 
If you're taking the class for the first time, you're not expected to have done "phisics" before. BTW, the word is physics. Also, there is more to these problems than picking a formula and plugging numbers into it.

Have you looked at the worked example problems in your text? To get you started, you need to draw a force diagram for the block on the plane, and determine the normal force the block applies perpendicular to the plane, and the tangential force acting parallel to the plane. The given coefficient of friction comes into play here.
 
Mark44 said:
If you're taking the class for the first time, you're not expected to have done "phisics" before. BTW, the word is physics. Also, there is more to these problems than picking a formula and plugging numbers into it.

Have you looked at the worked example problems in your text? To get you started, you need to draw a force diagram for the block on the plane, and determine the normal force the block applies perpendicular to the plane, and the tangential force acting parallel to the plane. The given coefficient of friction comes into play here.

mmmm thanks
 

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