Operation guide--Lab 1 Mechanics laboratory Formulas derivation swing collision Projectile Figl: Schematic diagram a)ho: Initial height of the strike-ball b) m: Mass of the strike ball c)m: Mass of the struck ball d) D: Diameter of the ball, which should be measured for 5 times. Please read out from the vernier calipers correctly. e)y: Height of the adjustable stage fx: Distance between the center of the target sheet and that of the adjustable stage Please answer the followin 1) The initial gravitational potential energy of strike ball: Eo 2) Velocity of strike ball at the bottom of its swing vI= 3)Elastic Collision Conservation of energy Velocity of struck ball after being hit: v2= If m=2, rewrite the velocity of struck ball: v2= 4)Horizontal projectile motion Expression of drop height y and the distance x(which are functions of velocity v2 and time 0 :y= 5) The values of x, y, mI, and m can be measured easily in the lab. Please write the a height of the strike ball by using the above quantities(x, y, ml, and m2) If m=m2, rewrite the initial height: ho= 6) Since total energy of the system(strike ball struck ball) will be lost in the4 Operation guide——Lab 1 Mechanics laboratory 1. Formulas derivation a) h0: Initial height of the strike-ball. b) m1: Mass of the strike ball. c) m2: Mass of the struck ball. d) D: Diameter of the ball, which should be measured for 5 times. Please read out from the vernier calipers correctly. e) y: Height of the adjustable stage. f) x: Distance between the center of the target sheet and that of the adjustable stage. Please answer the following questions: 1) The initial gravitational potential energy of strike ball: E0= . 2) Velocity of strike ball at the bottom of its swing: v1= . 3) Elastic Collision: Conservation of momentum: . Conservation of energy: . Velocity of struck ball after being hit: v2= . If m1=m2, rewrite the velocity of struck ball: v2= . 4) Horizontal projectile motion: Expression of drop height y and the distance x (which are functions of velocity v2 and time t): y = , x = . 5) The values of x, y, m1, and m2 can be measured easily in the lab. Please write the initial height of the strike ball by using the above quantities (x, y, m1, and m2): h0= . If m1=m2, rewrite the initial height: h0= . 6) Since total energy of the system (strike ball & struck ball) will be lost in the Fig1: Schematic diagram