A magnet of mass 6.32 kg is suspended from the ceiling by a cord as shown. A large magnet is somewhere off to the right, pulling on the small hanging magnet with a constant force of F = 113.4 N. At what angle theta ?with respect to the vertical does the magnet hang? A) 33.4 degrees B) 61.3 degrees C) 28.7 degrees D) 27.0 degrees

Same situation as in the previous two problems this time the magnet s mass is 7.20 kg and the magnetic force pulling it to the right is 115.1 N. The length of the cord is 1.39 m, and the ceiling is 3.10 m above the floor. Suppose that you cut the cord and the magnet falls to the floor while still being pulled to the right by the force of 115.1 N. How long will it take the magnet to hit the floor?     0.696 s     0.418 s     0.835 s     0.627 s

5N Knot 120° 3N 12. The figure above shows three ropes tied together in a knot. One of your friends pulls on a rope with a force of 3 Newtons and another pulls on a second rope with a force of 5 Newtons. How hard and in what direction must you pull on the third rope to keep the knot from moving? (Hint: If you don't want the knot to move, the net force must be zero.)

1.) A proton is moving to the right (along the positive x-axis) under the influence of an electrical field. It starts off with an initial velocity of 8x104" and comes to a stop over a distance of 1 kilometer. It travels in a straight line. a) What is the force that the proton experiences (magnitude and direction)? b) What is the magnitude and direction of the electrical field?