What is the net torque given the angles of applied forces

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SUMMARY

The net torque about a fixed point can be calculated using the formula Tnet = r1 × F1 + r2 × F2, where r represents the distance from the pivot point to the point of force application, and F represents the applied forces. The direction of each torque is determined by the rotational direction: counterclockwise torques are positive, while clockwise torques are negative. To find the net force, simply sum the magnitudes of the two forces applied. Understanding the signs of the forces based on their direction is crucial for accurate calculations.

PREREQUISITES
  • Understanding of torque and its calculation
  • Familiarity with vector multiplication
  • Knowledge of rotational direction (clockwise vs. counterclockwise)
  • Basic principles of forces and their summation
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  • Study the principles of rotational dynamics in physics
  • Learn about vector cross products and their applications in torque calculations
  • Explore examples of net torque calculations in real-world scenarios
  • Investigate the effects of different angles on torque magnitude
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Students studying physics, engineers working with mechanical systems, and anyone interested in understanding the principles of torque and force interactions.

tatiana
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1. STATEMENT

Calculate the net torque about a fixed pointfor 2 different forces given the angles of the applied forces.

2. MY QUESTION

what is the net force, meaning how do i fint it? and what do i do wit the information given? Do i use T=r x F...
 
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tatiana said:
1. STATEMENT

Calculate the net torque about a fixed pointfor 2 different forces given the angles of the applied forces.

2. MY QUESTION

what is the net force, meaning how do i fint it? and what do i do wit the information given? Do i use T=r x F...
I think your question should have read, "..what is the net torque...?". In which case the net torque is the sum of the torques from each force , that is, Tnet = r1 X F1 + r2 X F2, where the direction of each torque (positive or negative) depends upon whether each torque is acting counterclockwise or clockwise about that fixed point.
 


The net force is simple the sum of the two forces. To determine the signs of the forces you must determine the direction the force is moving, either counterclockwise or clockwise. If clockwise the force is negative, and if counterclockwise the force is positive. Once you have determined the signs of the forces you simple add them together and you have your net torque.
 

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