Suppose you have a massless beam that you’d like to balance. You are told to hang a 100 gram mass hanging 3 cm to the left of the fulcrum. How far away would we need to hang a 25 gram mass to the right of the fulcrum to achieve balance?

Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change δpe in the gravitational potential energy and the change δke in the kinetic energy of the stone as it moves from its initial to its final location? options a.δpe = 0 j and δke = 0 j b.δpe is positive and δke is negative c.δpe = 0 j and δke is positive d.δpe is negative and δke is positive e.δpe = 0 j and δke is negative