Question

10. + 0/3 points | Previous Answers SerPSET9 12.P.021. My Notes + Ask Your Teacher John is pushing his daughter Rachel in a wheelbarrow when it is stopped by a brick 8.00 cm high (see the figure below). The handles make an angle of a = 20.0° with the ground. Due to the weight of Rachel and the wheelbarrow, a downward force of 405 N is exerted at the center of the wheel, which has a radius of 15.0 cm. Assume the brick remains fixed and does not slide along the ground. Also assume the force applied by John is directed exactly toward the center of the wheel. (Choose the positive x-axis to be pointing to the right.) (a) What force must John apply along the handles to just start the wheel over the brick? 2292.58 N. (b) What is the force (magnitude and direction) that the brick exerts on the wheel just as the wheel begins to lift over the brick? magnitude 2.46 KN direction 61.10 o clockwise from the - x-axis Need Help? Read It Submit Answer Practice Another Version Viewing Saved Work Revert to Last Response

Answer 1

Qve -4 C-9-41+4-10t 12) t Rl-6-5) MIN -8727-12 Ques GET ,7ese ie the distmu from pant o to Point A E9uation for nd Forgye * torgoa forgue at Poht oto se 2eso if T3 we cm id AFTOr Su6tuting value of , yex forgue wiu cmpe ten be coese aue TX mv) Sy Gapadar mgmet on