Question

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EXPERIMENT 12 Work and Energy Laboratory Report TI QUESTIONS 1. What was the work done by the suspended weight when the car (a) moved up the incline and (b) moved down the incline? (Show your calculations Car moving up incline Car moving down incline 2. What was the work done by gravity acting on the car when it (a) moved up the incline and (b) moved down the incline? (Show your calculations.) θ=30° Car moving up incline Car moving down incline 3. (a) For the car going up the incline, what percentage of the work done by the suspended weight was lost to friction? /b) For the ear moving down the incline, what percentage of the work done by gravity was lost to friction? (Show your calculations θ 45° Car moving up incline Car moving down incline E XPERIMENT 1 2 Work and Energy T Laboratory Report DATA TABLE Purpose: To determine work done against friction Suspended Car moving up incline .140 ke Car moving .0 90.30 50-12 Calclation (show work) Percent difference in Energy method calculations for W ;(o.aais)(1.si) sin 30-(o.os)(q.9) 0.30 斥 lo 30) 0 41) Don't forget units 183 EXPERIMENT 12 Work and Energy Mass of car m DATA TABLE 2 WFt Parpose: To determine wock done against friction WC 3 dc Car moving 0.175 k9 041m O3 Car moving 09a Catealeaiono3 Percent difference in W (show work o.13 +-0.13) Energy method calculations for We LD32) 0.40) Sir .8L

Answer 1

Moving up the plane. The work done by the suspended weight in moving up the plane is, mgl sin θ For 8 30° W-m(9.81 m/s')/ sin 30° =4.91 nl For θ=45° W-In( 9.8 1 m/s, )l sin 45° 6.94 ml Moving down the plane. The work done by the suspended weight in moving up the plane is, w--mgl sin6 For θ-30° W=-m( 9.81 m/s. )1 sin 30° ーー4.91 nl For θ 45° W--m(9.81 m/s-)l sin 45° 9-30° | θ-45° car moving up the plane 4.91 ml6.94 ml car moving down the plane |-4.91 ml-6.94 ml situati on

2)

Moving up the plane. The work done by the gravity on the car is, For θ-30° W-m For θ-45° W-m V2 Moving down the plane. For 8 30° 2 For θ 45° situation car moving up the planemgng car moving down the plane ng mg