If the torque required to loosen a nut that holds a wheel on a car has a magnitude of 80 N·m, what force must be exerted at the end
of a 0.38 m wrench to loosen the nut when the angle is 60°?

Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f