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Unread 04-02-2017, 23:07
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Team 6070 Programming Captain
AKA: Tiger Kong
FRC #6070 (Gryphon Machine)
Team Role: Programmer
 
Join Date: Jan 2016
Rookie Year: 2016
Location: Mississauga
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Re: Climb Stopping Mechanism

Quote:
Originally Posted by Daniel_LaFleur View Post

As the robot climbs the rope the weight of the robot causes tension on the rope equal to the weight of the robot ... Agreed

But once the robot encounters the hard stop at the Davit, it will give an upward force on the davit equal to the torque of the winch. Since every action produces an equal and opposite reaction the Davit will push down on the robot equal to the torque of the winch. This will be added to the force of gravity on the robot, thus the rope will see full force of the winch + weight of the robot.

Please show me where I am wrong.
The force on the davit is equal to the torque of the winch minus the weight of the robot - opposite forces cancel. The davit will push down on the robot equal to that force - thus: weight of robot (due to gravity) + winch force - weight of robot = winch force.
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