# Passing/Succeeding Dynamics

1. Jun 20, 2014

### bigu01

Hello everybody,

Last semester I took dynamics and I got FD, and luckily the course is going to open in the summer school too.So I am trying to pass the course in the summer school, why not getting a good grade too.
Reasons why I did not pass were mainly because I did not like the teacher ( that should not be an excuse though,) and I did not solve too many examples, I found them pretty hard as I was not very familiar with them.I also did not have much time as I had other courses such as Strenght of materials, Differential equations , manufacturing technologies , thermodynamics, materials science stuff etc.
If you have any tips or advice for me that would help me passing dynamics easier or smarter I would be glad to hear you.

2. Jun 20, 2014

### psparky

Piece of cake:

Step 1: Go to class, study.
Step 2: Work/solve a ton of problems until you get it.
Step 3: Have fun and enjoy learning. All this stuff ties together....
Step 4: Reap the rewards of learning something you don't know and pass the class.
Step 5: Have a nice day.

3. Jun 24, 2014

### caldweab

Engineering dynamics?

I would review derivatives, statics, and mechanics. The course is going to be difficult if you don't have a grasp on these courses.

4. Jun 24, 2014

### caldweab

And another piece of advice. Never lump all those time consuming courses together if you can avoid it.

5. Jun 24, 2014

### psparky

Just adding to this.....SIN and COS are huge in dynamics.

For example, a 10 lb projectile leaves a cannon at a speed of 50 m/s at an angle of 30 degrees to horizontal.....

In regards to the 30 degrees, you will need to decide if you need SIN or COS.....very similar to statics.

Here's a gem problem that I love:

A 10 lb weight slides along a frictionless plane at 5 m/s. It then hits a plane with a coefficient of static friction of .1.

How long does it take for the weight to stop?

You will need
F=us * N (us = coeeficient of static friction)
F=ma
Vf=ao(tf-to)+Vo (o = initial, f=final)

Do a little plug and chuggin, and no problem.
The only tough part is to realize that you need the formula's above.

6. Jun 25, 2014

### caldweab

Yeah dynamics really is not bad once you understand the kinematic equations and when to apply them. Definitely read the book, and do example problems. If you use Engineering Mechanics: Dynamics by Hibbeler do all of the fundamental problems! I found that if you can do the fundamental problems then you can do the other problems at the end of the section. Not only that there are solutions to the fundamental problems in the back of the book.

7. Jun 26, 2014

### bigu01

We are using Dynamics by Kraige, I saw the Hibberler book too and it looked better to me.If you have information about both of them, which one would you suggest it to me?
The semester will start on Monday, and I am planning to have the Kinematics chapters finished before it has started.

Thank you all for the tips and advices.

8. Jun 26, 2014

### bigu01

It's just the normal curriculum here in Turkey unfortunately :(

9. Jun 26, 2014

### caldweab

I've never used Kraige's book so I couldn't compare them for you.