In order to keep a leaking ship from sinking, it is necessary to pump 15.0 lb of water each second from below deck up a height of 3.00 m and over the side. What is the minimum horsepower motor that can be used to save the ship?  

A small plane tows a glider at constant speed and altitude. If the plane does 2.30 x10^5 J of work to tow the glider 148 m and the tension in the tow rope is 2570 N, what is the angle between the tow rope and the horizontal?