The man uses the hand truck to move material up the step. If the truck and its contents have a mass of 50 kg with center of gravity at G, determine the normal reaction on both wheels and the magnitude and direction of the minimum force required at the grip B needed to lift the load. A B 60 0.4 m 0.5 m 0.4 m 0.4 m 0.1 m 0.2 m G Prob. 545

Controls of Dynamic Systems:ME 4334 (Tues&Thurs 2-3:20 Dr. Zhang) • Homework is Based from the Textbook. Course Website: Blackboard. [Will post homework, old quizzes and test.] Grades: • Homework 10% (Given Tuesday and due the next. Will be given the solutions.) • Quizzes 15% (Can have an equation sheet and will be every Thursday.) • Midterms 50% (3 exams.) • Final Exam 25% >There won't be a curve. Review of Dynamic Models: (Ch 1, Ch 2.2) What is a dynamic system • Steps of Controlling Systems. Feedforward is simpler while feedback is more accurate.