A rope is thrown over a beam, and one end is tied to a 300N bundle of lumbar. You pull the free end of the rope 2m with a force of 400N to lift the lumbar off the ground. How much work have you done?

Abookcase has a mass of 38 kg and the coefficient of friction between it and the floor is 0.82 what is the maximum force of friction between the bookcase and the floor a 372n b 305n c 412n d 449n

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.

Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?