NTNUJAVA Virtual Physics Laboratory
Enjoy the fun of physics with simulations!
April 21, 2014, 12:27:20 pm *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length
 
   Home   Help Search Login Register  
Wisdom is to bring the best out of our students. ...Wisdom
Google Bookmarks Yahoo My Web MSN Live Netscape Del.icio.us FURL Stumble Upon Delirious Ask FaceBook

Pages: [1]   Go Down
  Print  
Author Topic: Shooting the poor monkey!  (Read 9876 times)
0 Members and 2 Guests are viewing this topic. Click to toggle author information(expand message area).
Fu-Kwun Hwang
Administrator
Hero Member
*****
Offline Offline

Posts: 3047



WWW
«
Embed this message
on: September 02, 2009, 11:34:35 am » posted from:Taipei,T\'ai-pei,Taiwan

You can drag monkey or bullet with mouse, however the monkey is always been aimed as target.
Click right triangle to start the simulation.
The velocity can be adjusted.
The black line shows the relative position between bullet and the monley.
You will find the relative direction is always the same (with closer distance) because both of them are under the same gravity.

The bullet is aiming at the monkey.
If there is no gravity: the monkey will be shot.
With gravity: the monkey and the bullet will be influenced under the same gravity.
So they will fall the same dustance during the same time interval.
As loog as bullet is fired at the same time when monkey stars flaiing, the monkey will be shot.
The poor monkey is not saved by gravity. Sad

Embed a running copy of this simulation

Embed a running copy link(show simulation in a popuped window)
Full screen applet or Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop. This work is licensed under a Creative Commons Attribution 2.5 Taiwan License
  • Please feel free to post your ideas about how to use the simulation for better teaching and learning.
  • Post questions to be asked to help students to think, to explore.
  • Upload worksheets as attached files to share with more users.
Let's work together. We can help more users understand physics conceptually and enjoy the fun of learning physics!



http://www.youtube.com/watch?v=cxvsHNRXLjw


* projectileNfreefall.jpg (9.16 KB, 529x490 - viewed 105 times.)
Logged
lookang
Hero Member
*****
Offline Offline

Posts: 1726


http://weelookang.blogspot.com


WWW
«
Embed this message
Reply #1 on: September 02, 2009, 12:28:59 pm » posted from:Singapore,,Singapore

That's a good applet on the top post Smiley


May i suggest some refinements.
idea from 1
http://webphysics.davidson.edu/physlet_resources/gustavus_physlets/monkeyandhunter.html
Likes: can allow for exploring different angles
   air resistance variable for more realistic simulation?
   step back < button
Dislikes: need a auto scale button for those angles and velocity where collision is outside current frame

idea from 2
http://jersey.uoregon.edu/vlab/newCannon/NewCannon_plugin.html
Likes: the slider with editable fields for duo inputs, can Ejs do this easily? i did raise a feature request on Paco's wiki http://www.um.es/fem/EjsWiki/FeedbackEn/00034 but no news yet. Angry
   field to change acceleration in the y direction, this is important for inquiry learning
   the vector checkbox for velocity visualization
   graph of vx vy of both ball and monkey to allow of comparison of the significance of vy ball and vy monkey
   on a graph paper grid to allow for calculation of the angle instead of trial and error.
Dislikes: burning monkey, bad idea Grin

idea 3 no links because it is a commercial tool ( you can find by googling "shoot monkey" )
Likes: basketballer(instead of monkey) hanging on a tree, release hand from tree and fall, catch the ball, the morale story is sport related instead of shooting a monkey which is more suitable for promoting animal loving society that this resource can help. but a toy monkey should be fine. Grin

idea 4

Likes: laser pointer to illustrate the straight line path instead of a line drawn, more realistic if can show how it is achieve in real life


* monkethunter.PNG (13.49 KB, 813x515 - viewed 838 times.)

* monkey.PNG (44.83 KB, 601x569 - viewed 890 times.)
« Last Edit: September 02, 2009, 01:06:05 pm by lookang » Logged
Fu-Kwun Hwang
Administrator
Hero Member
*****
Offline Offline

Posts: 3047



WWW
«
Embed this message
Reply #2 on: September 02, 2009, 09:32:35 pm » posted from:Taipei,T\'ai-pei,Taiwan

The simulation was developed due to request from a teacher in Taiwan.
It was designed to show why the bullet will hit the monkey when the bullet is aiming at the monley directly.
No matter where is the monkey or the gun. (So user can drag monkey or gun with mouse).
The line connected between bullet and the monkey shows that their relative direction is always the same:
 Bullet and monkey fall at the same rate (the same vertical distance during the same time interval).

Quote
the slider with editable fields for duo inputs, can Ejs do this easily?
Please download the attached xml and go to view panel.
You will find sliderset next to PlottingFrame. Add it to GUI element tree. All three elements (label,numberfield and slider will be added together).


*** There are 1 more attached files. You need to login to acces it!
Logged
lookang
Hero Member
*****
Offline Offline

Posts: 1726


http://weelookang.blogspot.com


WWW
«
Embed this message
Reply #3 on: September 22, 2009, 01:19:38 pm » posted from:Venice,Veneto,Italy

oic. just saw this post
thanks!
will try it asap
Logged
Pages: [1]   Go Up
  Print  
Wisdom is to bring the best out of our students. ...Wisdom
 
Jump to:  


Related Topics
Subject Started by Replies Views Last post
Shooting the poor monkey!
kinematics
ahmedelshfie 0 1696 Last post May 27, 2010, 07:41:20 pm
by ahmedelshfie
Powered by MySQL Powered by PHP Powered by SMF 1.1.13 | SMF © 2006-2011, Simple Machines LLC Valid XHTML 1.0! Valid CSS!
Page created in 0.05 seconds with 22 queries.since 2011/06/15
宜久鋁門窗