Solving Mechanical Engineering Problems - HNC - Phil

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In summary, the conversation is about a user asking for help with a mechanical engineering problem involving the acceleration of a flywheel and the impact of a hammer on a pile. The user is struggling with finding the correct formula and asks for assistance. Another user gives advice and points out an error in the solution for part b.
  • #1
phil555
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Hi all, new to this. Studying my HNC in Mechanical Enginnering and was wondering if anyone can help with the below? I am struggling with the answers. Probs be quite easy to a few of you out there :smile:.

2. (a) A flywheel has a mass of 100 kg and a radius of gyration of 150 mm.
It is accelerated from 100 rev min–1 to 250 rev min–1 at a constant
rate in 15 s. Calculate the power required to produce this
acceleration.

(b) A hammer of mass 80 kg falls 4 m onto a pile of mass 200 kg and
drives it 80 mm into the ground. If the energy loss is 2.24 kJ during
impact, calculate:

(i) the velocity of the hammer immediately before impact

(ii) the common velocity immediately after impact.

If the post is in the wrong place please relocate.

All help appreciated.

Kind regards,

Phil.
 
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  • #2
anyone?
 
  • #3
You have to at least make an attempt - there is no point us just telling you the answer!
Start with just the first part - list what you know and what equations you think you need.
 
  • #4
Will do. Still trying to work out which formula I need.
 
  • #5
EXCELLENT ...IS ALL WHAT I WOULD SAY..:P

But re look at your solution of part b. [3]
 
  • #6
Thanks. Which part in particular? I come up with the same solution each time?
 

FAQ: Solving Mechanical Engineering Problems - HNC - Phil

1. What is the process for solving mechanical engineering problems?

The process for solving mechanical engineering problems typically involves the following steps:

  • Identify the problem and gather all necessary information
  • Develop a clear understanding of the problem and its constraints
  • Brainstorm and generate potential solutions
  • Analyze the potential solutions and select the most feasible one
  • Implement and test the chosen solution
  • Evaluate the results and make any necessary adjustments

2. What are some common challenges when solving mechanical engineering problems?

Some common challenges when solving mechanical engineering problems include:

  • Complexity of the problem
  • Limited resources or time constraints
  • Uncertainty or changing requirements
  • Difficulty in identifying the root cause of the problem
  • Inadequate knowledge or skills in a particular area

3. How important is teamwork in solving mechanical engineering problems?

Teamwork is crucial in solving mechanical engineering problems as it allows for the sharing of ideas, perspectives, and skills. Working in a team can also help to identify different approaches and potential solutions to a problem, and can lead to more efficient problem-solving.

4. What are some useful tools and techniques for solving mechanical engineering problems?

Some useful tools and techniques for solving mechanical engineering problems include:

  • Brainstorming
  • Root cause analysis
  • Failure mode and effects analysis (FMEA)
  • Computer-aided design (CAD) software
  • Finite element analysis (FEA)
  • Prototyping and testing

5. How can I improve my problem-solving skills in mechanical engineering?

To improve your problem-solving skills in mechanical engineering, you can:

  • Practice regularly and work on a variety of problems
  • Stay updated on new technologies and techniques in the field
  • Collaborate with other engineers and learn from their approaches
  • Seek feedback and reflect on your problem-solving process
  • Continuously work on improving your knowledge and skills in different areas of mechanical engineering

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