MJ16 P41 Q1 Gravitational Potential Between 2 Stars | A2 G-fields | Cambridge A Level 9702 Physics скачать в хорошем качестве

MJ16 P41 Q1 Gravitational Potential Between 2 Stars | A2 G-fields | Cambridge A Level 9702 Physics

9702/41/M/J/16: (a) By reference to the definition of gravitational potential, explain why gravitational potential is a negative quantity. #9702s16p41 #A2gPotentialP4 #Lv3 (b) Two stars A and B have their surfaces separated by a distance of 1.4 × 1012 m, as illustrated in Fig. 1.1. Point P lies on the line joining the centres of the two stars. The distance x of point P from the surface of star A may be varied. The variation with distance x of the gravitational potential φ at point P is shown in Fig. 1.2. A rock of mass 180 kg moves along the line joining the centres of the two stars, from star A towards star B. (i) Use data from Fig. 1.2 to calculate the change in kinetic energy of the rock when it moves from the point where x = 0.1 × 1012 m to the point where x = 1.2 × 10^12 m. State whether this change is an increase or a decrease. (ii) At a point where x = 0.1 × 10^12 m, the speed of the rock is v. Determine the minimum speed v such that the rock reaches the point where x = 1.2 × 10^12 m. #A2GravitationalFields Playlist:    • Ch13 Gravitational Fields | CAIE 9702 A2 P...   Instagram Pocket Guide (  / etphysics  ) More Resources (https://9702-physics.blogspot.com/) Support us! (  / etphysics  ) Tuition/Tutoring inquiries: Email: [email protected] Whatsapp: https://wa.me/60126679171 9702_s16_qp41 May/June 2016 #CambridgeALevelPhysics