A bulldozer is going down the road in a straight line. As you can see, there are many individual track pads that make up the complete tracks. While the dozer is going down the road, the track pads on the top are going 20 miles per hour. HOW FAST ARE THE PADS ON THE BOTTOM GOING? Post your answers! ;D
pads that touch the ground dont move :)
id say 20 mph but i know thats wrong so i dont know.
Pads on bottom are going backwards. -20mph
fast enough to keep up with the ones on top
haha i new it was a trick questions so my guess would be 20 miles per hour.. but after seeing slick saying -20 b/c pads are going backwards i change my answer to his :P
The pads on the ground are going 0 relative to the ground. The speed of the top pads is irrelevant.
If the bottom pads are going -20 and the top Pads are going 20, your dozer is stuck
Quote from: ProGrade on March 21, 2012, 01:27:10 AM
The pads on the ground are going 0 relative to the ground. The speed of the top pads is irrelevant.
If the bottom pads are going -20 and the top Pads are going 20, your dozer is stuck
Haha I'm with prograde on this one!! Lol! loll loll
The pad stops movin when it hits the ground, and it doesnt start movin again until it comes comes back up off of the ground. ;D ==rocks ==roxs ==roxx yeahh loll ==roll ==ha woho woho ==what ==rant ==bartmoon ==fa-q ==hi ==beavis ==evillaugh
Quote from: old school truck dude on March 21, 2012, 11:34:37 AM
The pad stops movin when it hits the ground, and it doesnt start movin again until it comes comes back up off of the ground. ;D ==rocks ==roxs ==roxx yeahh loll ==roll ==ha woho woho ==what ==rant ==bartmoon ==fa-q ==hi ==beavis ==evillaugh
x2
Quote from: old school truck dude on March 21, 2012, 11:34:37 AM
The pad stops movin when it hits the ground, and it doesnt start movin again until it comes comes back up off of the ground. ;D ==rocks ==roxs ==roxx yeahh loll ==roll ==ha woho woho ==what ==rant ==bartmoon ==fa-q ==hi ==beavis ==evillaugh
x3
They're going 20 mph, along with the machine. Every bottom pad becomes a top pad in a few seconds. They are moving forward, because each pad has a new location relative to the ground when it contacts it. Just like a tire. Just because the bottom of the tire is touching the ground doesn't mean it's not moving with the rest of the machine.
The pad never stops moving. It travels along the undercarriage of the bulldozer, relative to the machine movement. It's the illusion of it not moving against the ground that can trick you.
If the bottom pads were traveling at 0 mph then all the other pads connected to it on the top side would be 0 mph as well, a stationary machine. The pads change position on the ground with each rotation, so they are moving.
Question was "How fast are the bottom pads moving?" Not "relative to the ground" or anything like that. If any object changes its place on this earth, 20 miles in one hour, it's moving 20 miles an hour!
It stops movin when it hits the ground and it dont start movin again till it gets picked back up off the ground. Plain and simple, go watch a dozer move around - the ground aint movin so the pad aint either. The track is constructed of many objects, not just one. Not all of the objects involved in the construction of the track are in constant motion, particularly the pads that are touching the ground. The dozer itself is in motion, but the pads on the ground are not. This is a trick question, theres only one answer ;D
==lmaoo
If the pads were moving backwards, they would have loss of traction. Same as a car tire. The contact area of the tire that touches the ground doesnt move. If it did you would have a loss of traction. ;D
People way over though this.
then what the answer!!! Big red
answers "n/a"
you guys are crazy. lol
Quote from: old school truck dude on March 30, 2012, 12:05:00 PM
It stops movin when it hits the ground and it dont start movin again till it gets picked back up off the ground. Plain and simple, go watch a dozer move around - the ground aint movin so the pad aint either. The track is constructed of many objects, not just one. Not all of the objects involved in the construction of the track are in constant motion, particularly the pads that are touching the ground. The dozer itself is in motion, but the pads on the ground are not. This is a trick question, theres only one answer ;D
Yeah but 20 miles an hour doesn't imply the motion has to be constant. If the pads on the ground, not moving, end up some place else in 20 miles after one hour, they too have "moved" a total of 20 mph ==roll
==roll
Its a measurement of speed, not distance. The contact patch doesnt move.
soo what happens when theres a loss off traction ??? ;D ;D
Quote from: BigFrank on March 31, 2012, 06:21:16 PM
soo what happens when theres a loss off traction ??? ;D ;D
Turnin and burnin!
Quote from: BigFrank on March 31, 2012, 06:21:16 PM
soo what happens when theres a loss off traction ??? ;D ;D
Ask Al ==roll
;D
Quote from: J.C. on March 31, 2012, 03:08:44 PM
Its a measurement of speed, not distance. The contact patch doesnt move.
This is the key point that makes the 0 mph statement true. applaudd
Ok, let's toss this one around some more, I bet some folks havent seen it yet ;D
Quote from: Newbie on March 31, 2012, 02:14:21 AM
you guys are crazy. lol
==lmaoo ==gj yeahh ==roxs Only on ==wgm ++peace
I found out last fall what happens when the bearings go out of the front wheel not a fun phone cal too make me hey ahh this dozer just went down foreman @#!$#%$%^U&*^*%(*(*)*g ;*^%%$@#$%d@~##f$@#$!@@$!@!#%#@%@^^#^##@$#@ ok ill be down there in a few minutes ==sick
Theoretically the tracks do not move except up and down..
if given the rotational speed of the earth divided by the direction of travel in constant relation to the dozer, multiplied by pie.. add the vertical constant then subtract the drive wheel diameter and multiply that by X.. now.. take that numeral and multiply it by the degree off axis of the earths core and... ==doh ==doh
ah hell.. the answer is 3
Quote from: Hammerlane on January 27, 2015, 05:20:31 PM
Theoretically the tracks do not move except up and down..
if given the rotational speed of the earth divided by the direction of travel in constant relation to the dozer, multiplied by pie.. add the vertical constant then subtract the drive wheel diameter and multiply that by X.. now.. take that numeral and multiply it by the degree off axis of the earths core and... ==doh ==doh
ah hell.. the answer is 3
==np applaudd lol. ++peace ++peace