HELP PLEASE FOR A FINAL (NO LINKS PLEASE)
Caveman Bob is the first from his clan to use a lever. He grabs a 3m tree branch and places it over a boulder (fulcrum). He then pulls down on the branch with a force of 500N and the other end lifts the 3500N carcass of the sabertooth tiger 1m off the ground. What is the mechanical advantage of the lever (2pts)?

Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle  can be assumed at 30 deg