We presume that it starts at rest at Point A, which is a height H=1.60 m above the lowest point. We will assume that there is no friction or air resistance, so WNC is equal to zero. When the block is released, it slides down the ramp and back up the opposite side to the same height at which it started (Point E), slowing to a speed of zero at maximum height. It then continues to slide back and forth on the ramp. Whenever we calculate a potential energy due to gravity, we need to select a reference levelr In this problem we will presume the lowest point on the track (Point C) is the reference level, where our height is considered zero. What is the kinetic energy, gravitational potential energy and total mechanical energy of the block when it is at rest at Point A? (You need to get all three correct to get credit.) Submit Answer Tries 0/10 What is the total mechanical energy of the block as it is traveling through Point C? Submit Answer Tries 0/10 Rank the total mechanical energy at the 5 points 1 represents the Point with the greatest total mechanical energy. Point A a Point D a Point E a Point 5 a Point C Submit Answer Tries 0/1(! What is the kinetic energy, gravitational potential energy and total mechanical energy of the block when it is traveling through Point C? KE = PE = TE = Submit Answer Tries 0/10 Points B and D are at a height, h, above the reference level that is half of the height of Points A and E. What is the kinetic energy, gravitational potential energy and total mechanical energy of the block when it is traveling through Point B? Block on a Ramp 01 Due in 2 hours, 24 minutes Energy provides a very flexible and powerful way to solve problems in physics that may be much more complicated when using forces. At the center of this is the idea of conservation of energy. We are dealing purely with mechanical energy right now. We define the total mechanical energy of an object as the sum of its kinetic energy and its gravitational potential energy. We will add other types of energy at later times. Conservation of energy in this context says that the final total mechanical energy is equal to the initial total mechanical energy plus any work done by non-conservative forces (WNC): Efinal = Einitial + WNC which we can expand to: (KEfinal + PEfinal) = (KEinitial + PEinitial) + WNC Examples of non-conservative forces might be friction and air resistance, which typically do negative work on the object and would reduce the mechanical energy of the object, and motors and engines, which could do positive work and increase the mechanical energy of the object. In this exercise a smooth wooden block of mass M=0.390 kg slides down a ramp and back up the other side. E H B D h CPoints B and D are at a height, h, above the reference level that is half of the height of Points A and E. What is the kinetic energy, gravitational potential energy and total mechanical energy of the block when it is traveling through Point B? KE = PE = TE = Submit Answer Tries 0/10 What is the kinetic energy, gravitational potential energy and total mechanical energy of the block when it is traveling through Point D? (You need to get all three correct to get credit.) KE = PE = TE = Submit Answer Tries 0/10 What is the kinetic energy, gravitational potential energy and total mechanical energy of the block when it is at rest at Point E? (You need to get all three correct to get credit.) KE = PE = TE = Submit Answer Tries 0/10 Suppose we add friction and that when we release the block from rest at Point A, the block only manages to slide up to Point D before turning around and sliding back down. Given this situation, what would the kinetic energy, gravitational potential energy and total mechanical energy of the block be at Point D? KE = PE = TE = Submit Answer Tries 0/10 What was the work done by friction as the block moved from Point A to Point D? Submit Answer Tries 0/10