1. Two masses are attached by a rope as shown. If a force of 80 Newtons upward is applied to the top rope, find the (a) acceleration that ensues and (b) the force of tension in the wire between the masses.

2. Tarzan (who is actually quite short and is a svelte 48 Kg) runs and jumps onto a 3.2 m long vine and finds that his maximum swingout angle (see figure below) is 25.0o with respect to the vertical. Neglect the mass of the vine throughout.

Compute how fast he was running when he hit the vine and what was the maximum g's felt by him during the swing.

3. The Earth orbits the Sun at a distance of 1.50 x 1011 meters, and takes one year (3.1 x 107 seconds) to go all the way around once. Use this information to determine the mass of the Sun in Kg.