- #1
Rajika
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Homework Statement
So I need to move this rod with length r from point A to B as shown. It has to rotate from A to B which is 90° within 10 seconds. What I want to calculate is the torque and power required if a motor was to produce this motion (location of the motor is shown in the diagram). Can you then also calculate the torque and power required from the motor if this was in space (object is weightless, but the mass is still there). you can ignore friction and other small effects. here's the link for the diagram http://imgur.com/a/egtnK
Homework Equations
P = T * w
w - angular velocity
T - Torque
P - Power
The Attempt at a Solution
So I'm guessing using the above equation we can find power required for the motor?
So I can calculate angular velocity as follows,
w = 90/10 = pi/20 radians per second.
But now how do I calculate torque? What happens in space when there's no weight?
Thank you in advance