A9.08 m ladder with a mass of 23.8 kg lies flat on the ground. a painter grabs the top end of the ladder and pulls straight upward with a force of 260 n. at the instant the top of the ladder leaves the ground, the ladder experiences an angular acceleration of 1.78 rad/s2 about an axis passing through the bottom end of the ladder. the ladder's center of gravity lies halfway between the top and bottom ends. (a) what is the net torque acting on the ladder? (b) what is the ladder's moment of inertia?

You and a friend (alex) are at a a tree-top adventure park .. . part of the course requires you to climb up a rope. you both climb the same rope in the same amount of time. however, the tension in the rope is greater when alex climbs. who did the most work? alex did - more tension means more force - more force means more work was done you did - less tension means less force - less force means more work was done to find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? when more work was done, the couch was moved less. when more work was done, the couch was moved further. when more work was done, the couch wasn't moved at all. when more work was done, the couch was moved the same distance.