Finally, consider the gravitational force generated by a spherically symmetrical massive object. the magnitude and direction of such a force are given by newton's law of gravity: f⃗ g=−gm1m2r2r^, where ds⃗ =drr^; g, m1, and m2 are constants; and r> 0. find u(rf)−u(r0)=−∫rfr0f⃗ g⋅ds⃗ . express your answer in terms of g, m1, m2, r0, and rf. view available hint(s)

Amoving company collects data about couches they move and displays the data in a table. the force along the ramp, the angle of the ramp, and the height the couch is raised to are shown. which statements correctly compare the work done to move the couches? check all that apply. the same amount of work is done for couches 1 and 3. the same amount of work is done for couches 2 and 3. the work for couch 1 is greater than the work for couch 2. the work for couch 2 is less than the work for couch 3. the work for couch 3 is greater than the work for couch 1. the work for couch 2 is greater than the work for couch 1.