Question

Physics I: Mechanics and Thermodynamics 2 MEHMET Homework 6 Problem 7.63 > 5 of 6 Constants Periodic Table Part A How much work is done by the horizontal force Fp 150 N on the 18-kg block of the figure(Figure 1) when the force pushes the block 7.0 m up along the 32° frictionless incine? Express your answer using two significant figures. Figure Ηα ΑΣφ. 1 of 1 O W J Fp Request Answec Prexious Answers Submit 18 kg 150 N X Incorrect; Try Again; 5 attempts remaining 32

Answer 1

10.00 given mass m = LB kg O=320 Distance S=7m W = F 105320) 5 = (150 (0532) 1000 me ingreso angsing 11.00 12.00 12.00 13.00 13.00 14.00 1. — = 890.455 Molo Hero mgsino and So you put negative sign W = - 18x9.8 xsin327 18.00 - 1654,3457 © work done by normal faris W o J 3800 simre normal forse and displacement are perpendicular to - each other network done We Ap that WN W-890.45+(-654.34) +0 = 236.15 From work energy theorem, w = Change in Kindlic energy I W = 1/2m (V2 V3 = - mv 2 ( Initial speed Vico) 12.00 = 2W = 2(2361) 15.00 15.00 16.00 16.00 - 12.00 8 26.232 7-15 12