Three forces of equal magnitude are applied to a 3-m by 2-m rectangle. Forces F
ID: 2110890 • Letter: T
Question
Three forces of equal magnitude are applied to a 3-m by 2-m rectangle. Forces F 1 and F2 act at 45 ° angles to the vertical as shown, while F 3 acts horizontally.
a) Is the net torque about point A clockwise, counterclockwise, or zero?
Explain how you determined your answer.
b) Is the net torque about point B clockwise, counterclockwise, or zero?
Explain how you determined your answer.
c) Is the net torque about point C clockwise, counterclockwise, or zero?
Explain how you determined your answer.
Explanation / Answer
a).
clockwise
sqrt(2) * F1 - R3
b).
zero
F2 / sqrt (2) - F1 / sqrt(2)
c).
zero
All forces passes through C , so distance is Zero .