The free body diagram below represents a 1 500 kg car sitting on a 3 000 kg bridge supported at its far ends. The car's position is three quarters of the length L from the left end of the bridge. Identify the one error in the torque equation below: a. never produces a torque on the bridge no matter where the axis of rotation is placed. b. never produces a torque on the bridge no matter where the axis of rotation is placed. c. cannot produce a torque on the bridge no matter where the axis of rotation is taken since it is at the center of the bridge. d. Because the perpendicular distance to from the left end of the bridge is 0, F1L should be 0. e. Because the perpendicular distance to from the right end of the bridge is 0, F2L should be 0

What are the parameters that impact the magnitude of a torque? a) The magnitude of the force, the duration of the action and the angle of application of the force. b) The magnitude of the applied force, the angle at which it's applied and the distance at which it's applied from the axis of rotation. c) The magnitude of the force, the mass of the object and the duration of the action.

1. Calculate the torque about the z-axis pointing out of the page at the origin in the following figure given that F₁ = 2 N, F₂=9N, F3=4 N, F₁=5 N. Hint: Use the sign convention for torques, counter-clockwise rotation corresponds to a torque in the positive z-direction and clockwise rotation corresponds to a torque in the negative z-direction. Which forces produce clockwise rotations and which forces produce counter-clockwise rotations? While using the formula for cross-product AXB=ABsine, remember that is the angle between the tails of the vectors A and B. To determine e rearrange the vectors so that their tails coincide. Nm k net = tu~ 30° F₂ YA 2m 3 m V O 2 m F3 F4 20° ILL X

The fishing pole in the figure below makes an angle of 20.0° with the horizontal. What is the magnitude of the torque exerted by the fish about an axis perpendicular to the page and passing through the angler's hand if the fish pulls on the fishing line with a force F = 115 N at an angle 37.0° below the horizontal? The force is applied at a point L = 2.20 m from the angler's hands. N.m 20.0° 20.0⁰ 37.0° F