3. For the meter stick shown in Figure 10-4, the force F1 10.0N acts at 10.0 cm.

Question

3. For the meter stick shown in Figure 10-4, the force F1 10.0N acts at 10.0 cm. What is the magnitude

of the torque due to F1 about an axis through point A perpendicular to the page? Is it clockwise, or is

it counterclockwise? Show your work and give correct units.

4. In Figure 10-4 the force F2.15.0N acts at the point 70.0 cm. What is the magnitude of the torque due

to F2 about an axis through point B and perpendicular to the page? Is the torque clockwise, or is it

counterclockwise? Show your work and give correct units.

10 20 30 40 50 60 70 80 90 F1 10.0 N F2 15.0 N Figure 10-4 Meter stick with two forces Fi and F2 acting at points shown 3. For the meter stick shown in Figure 10-4, the force F1 10.0N acts at 10.0cm. What is the magnitude of the torque due to F about an axis through point A perpendicular to the page? Is it clockwise, or is a o the page? I it clockwise, or is it counterclockwise? Show your work and give correct units

Explanation / Answer

Torque is force*distance and is defined to be positive if it rotates the body counter clockwise

Torque due to F1: 10N*.1m = 1 N*m (clockwise)

Torque about point B due to F2:

T = 15N*(.7-.5)m = 3 N*m (clockwise)

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