F1= 11.9 N (pointing north) Draw and label the moment arm (lever arm) for each of the four forces. Determine the direction of the torque due to each force. What is the net torque exerted about the axis (with direction)? What is angular acceleration of the disk.
F1= 11.9 N (pointing north)
Draw and label the moment arm (lever arm) for each of the four forces.
Determine the direction of the torque due to each force.
What is the net torque exerted about the axis (with direction)?
What is
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(a)
Here,
The torque due to the force F1 and F4 is 0.
For F1 the moment line cannot be drawn, because the distance from the axis of the rotation to the line of force is 0.
Similarly,
For F4 the moment line cannot be drawn, because the distance from the axis of the rotation to the line of force is 0.
The moment arm for F2 and F3 is given as.
The moment of arm = the perpendicular distance from an axis to the line of action of a force.
For F3 the moment arm is the same as the radial distance from the axis of rotation.
For F2 the moment arm is represented as the perpendicular distance from the axis of rotation to the line of force.
The torque due to the force F1 is 0, hence there is no direction of the torque due to the force F1.
The direction of the torque due to the force F2 is in - z-direction or it is in the clockwise direction.
The direction of the torque due to the force is in + z-direction or it is in an anti-clockwise direction.
The torque due to the force F4 is 0, hence there is no direction torque due to the force F4.
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