1. The figure above shows an 80-kilogram person standing on a 30-kilogram platform suspended by a rope passing over a stationary pulley that is free to rotate. The other end of the rope is held by the person. The masses of the rope and pulley are negligible. You may use g=9.8 m/s2. Assume that friction is negligible, and the parts of the rope shown remain vertical. What is the tension on the rope if the person loosen the rope and the platform goes downward with 2m/s2?