Circular to Linear Task
-
- Member
- Posts: 10
- Joined: February 20th, 2011, 9:51 am
- Division: C
- State: MI
- Has thanked: 0
- Been thanked: 0
Re: Circular to Linear Task
You can't combine tasks?
Okay what about a lever moving in an arc (150 degrees), turning on a switch?
Okay what about a lever moving in an arc (150 degrees), turning on a switch?
-
- Member
- Posts: 18
- Joined: February 17th, 2010, 7:50 am
- Division: C
- State: MI
- Has thanked: 0
- Been thanked: 0
Re: Circular to Linear Task
Originally my team was planning on running a simple Lego piston, but that just seems iffy right now.
Regardless, we need an alternative. The way I interpreted the task was conversion of angular velocity to linear velocity - so a piston would be the rotating piece causing the arm to move forwards and backwards. A ball rolling down a track seems a bit too simple, though - it's just gravity weighing it downwards, no real conversion since technically it wouldn't need to be spinning in the first place to have that linear motion. I guess another idea would be using a motor to raise a mass on a loop? The circular motion of the loop would translate to the linear motion of the mass, although I really dislike having to use motors. Just a pet peeve of mine. Any other suggestions?
Regardless, we need an alternative. The way I interpreted the task was conversion of angular velocity to linear velocity - so a piston would be the rotating piece causing the arm to move forwards and backwards. A ball rolling down a track seems a bit too simple, though - it's just gravity weighing it downwards, no real conversion since technically it wouldn't need to be spinning in the first place to have that linear motion. I guess another idea would be using a motor to raise a mass on a loop? The circular motion of the loop would translate to the linear motion of the mass, although I really dislike having to use motors. Just a pet peeve of mine. Any other suggestions?
Events: Remote Sensing, Chem. Lab, It's About Time, Dynamic Planet, Mission Possible, Env. Chem. The latter two I found out I had to do 4 weeks before Regionals. Fun, fun, fun.
- Primate
- Member
- Posts: 409
- Joined: January 15th, 2009, 4:34 pm
- Division: C
- State: NY
- Has thanked: 0
- Been thanked: 0
Re: Circular to Linear Task
You don't even need the mass to be on a loop. Just have the motor wind up the string, and you'll be converting circular motion of the shaft into linear motion of the mass. (How were you planning on running a piston without a motor?)Gooblah wrote:Originally my team was planning on running a simple Lego piston, but that just seems iffy right now.
Regardless, we need an alternative. The way I interpreted the task was conversion of angular velocity to linear velocity - so a piston would be the rotating piece causing the arm to move forwards and backwards. A ball rolling down a track seems a bit too simple, though - it's just gravity weighing it downwards, no real conversion since technically it wouldn't need to be spinning in the first place to have that linear motion. I guess another idea would be using a motor to raise a mass on a loop? The circular motion of the loop would translate to the linear motion of the mass, although I really dislike having to use motors. Just a pet peeve of mine. Any other suggestions?
@missionimpossible, no, you can't combine tasks. It's clearly listed somewhere, along with the restriction on parallel tasks.
events 2012 gravity vehicle, robot arm, thermodynamics, tps
-
- Member
- Posts: 9
- Joined: January 6th, 2011, 6:49 am
- Division: C
- State: NM
- Has thanked: 0
- Been thanked: 0
Re: Circular to Linear Task
What about using a motor to turn a disc with a stick spanning the radius? The disc turns while the stick pushes a ball along a ramp, converting linear to circular.
-
- Member
- Posts: 126
- Joined: November 23rd, 2010, 4:29 pm
- Division: C
- State: VA
- Has thanked: 0
- Been thanked: 0
Re: Circular to Linear Task
NikitaB wrote:What about using a motor to turn a disc with a stick spanning the radius? The disc turns while the stick pushes a ball along a ramp, converting linear to circular.
I think you have to convert circular to linear, not the other way around.
- Primate
- Member
- Posts: 409
- Joined: January 15th, 2009, 4:34 pm
- Division: C
- State: NY
- Has thanked: 0
- Been thanked: 0
Re: Circular to Linear Task
What he describes meets the criteria; I think he just mistyped.questionguy wrote:NikitaB wrote:What about using a motor to turn a disc with a stick spanning the radius? The disc turns while the stick pushes a ball along a ramp, converting linear to circular.
I think you have to convert circular to linear, not the other way around.
events 2012 gravity vehicle, robot arm, thermodynamics, tps
-
- Member
- Posts: 1388
- Joined: February 5th, 2006, 7:06 am
- Division: Grad
- State: NY
- Has thanked: 0
- Been thanked: 3 times
Re: Circular to Linear Task
Does it? I'm still not at all confident that a rolling ball is going to count as linear.
- Primate
- Member
- Posts: 409
- Joined: January 15th, 2009, 4:34 pm
- Division: C
- State: NY
- Has thanked: 0
- Been thanked: 0
Re: Circular to Linear Task
I see it as a rotating motor (circular) moving a ball in a linear fashion. I agree that a rolling ball alone (where you say its rotational energy is converted into its own translational kinetic energy) is questionable.Flavorflav wrote:Does it? I'm still not at all confident that a rolling ball is going to count as linear.
events 2012 gravity vehicle, robot arm, thermodynamics, tps
- illusionist
- Member
- Posts: 942
- Joined: March 20th, 2010, 4:13 pm
- Division: C
- State: MI
- Has thanked: 0
- Been thanked: 1 time
Re: Circular to Linear Task
If I use the winch system for my IMA 3 pulley task, can I use the system again? Not the exact same motor and string, but the same idea.
Also, if i was to use the winch system again, could I use string to lift up a balloon containing baking soda? The balloon will be lying down, connected to a beaker of vinegar.
Also, if i was to use the winch system again, could I use string to lift up a balloon containing baking soda? The balloon will be lying down, connected to a beaker of vinegar.
Who is online
Users browsing this forum: No registered users and 10 guests