What percentage of kinetic energy of a moving particle is transferred

What percentage of kinetic energy of a moving particle is transferred to a stationary particle when it strikes the stationary particle of 5 times its mass? (Assume the collision to be head-on elastic collision) What percentage of kinetic energy of a moving particle is transferred to a stationary particle when it strikes the stationary particle of 5 times its mass? (Assume the collision to be head-on elastic collision)

Views: 6,041 100 N H.2.4 RTATION 3.26 In the figure shown a rectangular piece of wood is pinned at its centre. The forces applied to corners B and D have the same magnitude of 20 N and are directed parallel to the long and short sides of the rectangle. The long side of the rectangle is twice the short side. A third force (not shown in the figure) is applied to corner A, directed along the short side of the rectangle (cither toward B or away from B). such that the rectangle is at equilibrium. Find the magnitude and direction of the force applied to corner A. Sol. The net torque acting on rectangle is the sum of the torques produced by the three forces acting at points A , B and D. We are considering the torque that tends to produce a counterclockwise rotation about the axis as positive torque. As the piece of wood is at equilibrium, the net torque is equal to zero. Let us consider L be the length of the short side of the rectangle, so that the length of the long side is 2 L. The lever arms for the forces acting at A , B and D are shown in figure. The B is + Fl B ​ , and the clockwise torque produced by the force at corner D is − F D ​ Assume the force at A (directed along the short side of the rectangle) points toward corner B, the counterclockwise torque produced by this force is + F A ​ l A ​ . As the net torque about the axis shown should be equal to zero: ⇒ F A ​ L = F A ​ l A ​ + F l B ​ − F l D ​ = 0 ⇒ The length L can be eliminated algebraically from this result, whi...

Energy transfers Transferring energy Energy is transferred by one of the following four types of energy pathway: • mechanical work – a force moving an object through a distance • electrical work – charges moving due to a potential difference • heating – due to temperature difference caused electrically or by chemical reaction • radiation – energy transferred as a wave eg light, infrared, sound - the Sun emits light radiation and infrared radiation When there are energy transfers in a closed system, there is no net change in the total energy in the system. Energy flow diagrams Diagrams can be used to show how energy is transferred from one store to another. Two examples are the transfer diagram and the Sankey diagram. Transfer diagrams In transfer diagrams the boxes show the energy stores and the arrows show the energy transfers. For example, a transfer diagram for a child at the top of a slide may be: Gravitational energy stored in the child at the top of the slide is transferred as mechanical work done to speed up and to do work against friction. The result of this is a shift of energy from the gravitational potential energy store to the kinetic energy store and the internal energy store (raising the temperature of the child and the slide). Sankey diagrams Sankey diagrams start off as one arrow that splits into two or more points. This shows how all the energy in a system is transferred into different stores. Sankey diagrams are really useful when the amount of energy in ...