Question

I need help with this even though the questions long the answer shouldn’t be as long.

Exam 2 Take Home Bluebook P2 MCC PHYS 2220 Fall 2018 As shown below, a system consists of two masses (m, ma) and the Earth (with attached bracket). The masses are connected by a massless string which passes over a friction free massless pulley There is a spring between m, and the bracket. The spring is "relaxed" when its moving end is at x·0.000m ( so note that it is stretched at the start of the motion and still stretched a bit at the end of the motion). There is no friction between m, and the horizontal surface, but there is friction between m, and the inclined surface. To save you some time, the kinetic friction force is given and you do not have to show how it was obtained. The masses are moving with initial speeds as shown. The initial and final coordinates of the masses are given tspring end relaxed at z 0.00 m 20.00N/m 0.500m/s 2.00k (17.00m.7.00m) no friction (2.50m, 10.00m) (10.00m, 10.00 m) 2.1 0.500m/s (23.00m, 2.50m) friction The overall goal of the problem is to find the speed of the masses when they reach the final position. In order to do so, you are to use the "Extended Work Energy Theorem for a System of Particles or Particle Like Objects: ΣWezt + ΣWint non-conservative-MEj-ME; where: You can assume that there are no external forces acting on the system, and that the only internal non -conservative force is the force of kinetic friction between m and the inclined surface (which is given, and you don't have to show how it was obtained). In that case In general, the work done by a Force on an object as the object moves along a particular path from initial position/, to final position ξ is given by the Work Integral When the force acting on an object is constant, and the object moves in a single direction along a straight line with a displacement "Ad", the Work Integral reduces to the following simple result (which you should have learned in PHYS 1180) Where is the angle between the direction of the Force and the direction of displacement

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