The answers are provided; please explain the purpose of each equation and why they were used Consider a bar of length 5.5 m, being acted on by three forces and constrained to rotate about its left end. The magnitudes of the first two forces are 19 N and 28 N and the first force is acting on the end of the bar at an angle of 43° What is the torque in newton-meters, due to F1 on this bar relative to the left end? Ans. = 78.87 Nm Equation used: τ1 = rFsinθ What is the torque in newton-meters, due to F2 on this bar relative to the left end, if this force is acting at the midpoint of the bar? Use a coordinate system with positive directed out of the screen. Ans. = 77 Nm Equation used: τ2 = F2 x (L / 2) What is the magnitude of the force F3, in newtons, if the force is a distance 0.85 m from the left end and the bar is not rotating? Ans. = 183.38 N Equation used: F = (τ1 + τ2) / d
The answers are provided; please explain the purpose of each equation and why they were used
Consider a bar of length 5.5 m, being acted on by three forces and constrained to rotate about its left end. The magnitudes of the first two forces are 19 N and 28 N and the first force is acting on the end of the bar at an angle of 43°
What is the torque in newton-meters, due to F1 on this bar relative to the left end?
Ans. = 78.87 Nm
Equation used: τ1 = rFsinθ
What is the torque in newton-meters, due to F2 on this bar relative to the left end, if this force is acting at the midpoint of the bar? Use a coordinate system with positive directed out of the screen.
Ans. = 77 Nm
Equation used: τ2 = F2 x (L / 2)
What is the magnitude of the force F3, in newtons, if the force is a distance 0.85 m from the left end and the bar is not rotating?
Ans. = 183.38 N
Equation used: F = (τ1 + τ2) / d
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