Today you are going to investigate the relationship between Mass and the Force the Earth exerts on Objects (aka weight). To accomplish this we are going to make use of a spring scale, a hanging platform, and several objects each with a mass of 100 kg. Draw a force diagram of the hanging platform. What is the relationship between the length of the force arrow FScale on Object and the length of the force arrow FEarth on Object when the object is at rest hanging from a spring?

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