PHYSICS 7C Study Guide - Final Guide: Inelastic Collision, University Of Florida, Projectile Motion

• School: UC-Irvine
• Department: Physics
• Course: PHYSICS 7C
• Professor: All

Document Summary

Ke = 1/2mv2 = work done = f(r) dr. = -gmem /re3 r dr = -(gmem /re3) r2 /2 | re0 = gmem /2re. The pulley is a uniform solid disk of mass 2kg and diameter 0. 5m. After the system is released: find the tension in the wire on both sides of the pulley. Forces in x: f = t1 = m1a. Forces in y: f = m2g - t2 = m2a (note a=a1=a2=r ) Torque: =i (t2-t1)r = (1/2 mr2) so (t2-t1) = 1/2 ma. Solve: m2g = (m1+m2 + 1/2 m)a a = [m2/(m1+m2 + 1/2 m)]g = 2. 72 m/s2. T2 = m2(g-a) = 35. 4 n: the acceleration of the box a = 2. 72 m/s2, the horizontal and vertical components of the force that the axel exerts on the pulley. Fx = max = t1 = 32. 6 n. Fx = f1x + f2x = -2. 105 x10-10 n. The third sphere must be between the other two spheres.