Which Way Will the Disk Rotate With Two Hanging Masses?

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SUMMARY

The discussion centers on calculating the torque and determining the rotation direction of a circular disk influenced by two hanging masses, m1=10g and m2=50g, positioned at distances of 4.5cm and 6.8cm from the axis of rotation, respectively. The angles of application for the forces are 130 degrees for F1 and 98 degrees for F2. Using the torque formula T=rFsin(phi), participants are guided to first compute the forces using the equation F=mg, followed by calculating the torques to ascertain the disk's rotational direction.

PREREQUISITES
  • Understanding of torque calculations using the formula T=rFsin(phi)
  • Basic knowledge of gravitational force (F=mg)
  • Familiarity with angular measurements in degrees
  • Concept of rotational motion and its effects on objects
NEXT STEPS
  • Calculate the forces F1 and F2 using the gravitational force equation F=mg
  • Determine the torque for each mass using T=rFsin(phi)
  • Analyze the net torque to conclude the direction of rotation
  • Explore the effects of varying mass and distance on torque and rotation
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone studying mechanics, particularly those focusing on rotational dynamics and torque calculations.

ariclaire
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Homework Statement



A circular disk has two masses acting on it, m1=10g, m2=50g. The forces caused by these masses are 4.5cm (F1) and 6.8cm (F2) away from the axis of rotation (center). The angles are 130 degrees (F1, and on outer side away from center) and 98 degrees (F2, also on outer edge away from center). Calculate F1 and F2. Which way will the disk rotate?

Homework Equations



T=rFsin(phi)

The Attempt at a Solution



I wasn't even really sure where to start with this one. Don't know if I'm missing some info or what.
 
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Start by calculating the two forces using gravity (mg). Then find torque from these forces.
 

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