Question

Solve design problem 1

Section 7.4 Newton-Euler Equations: Gene Design Problems Design Problem 7.1 Revisit the calculations done at the beginning of the chapter concerning the determination of the maximum acceleration that can be achieved by a motorcycle without causing the front wheel to lift off the ground. Specifically, construct a new model of the motorcycle by selecting a real-life motorcycle and researching its geometry and inertia properties including the inertia properties of the wheels. Then analyze your model to determine how the maximum acceleration in question depends on the horizontal and vertical positions of the center of mass with respect to the points of contact wheels. Include in your analysis a comparison of results that account for the inertia of the front wheel with results that neglect the inertia of the front wheel. between the ground and the UCAT Figure DP7.1 Design Problem 7.2 One end of a seat belt on passenger cars is wound around a ratchet wheel that can be direction of motion decelration of the car exceeds a set value. In the sketch shown, consider

Answer 1

C is centre of mass of bile (system). Resolving free Body Diagonal amponeut wise f_1 = m u_ax In y direction: N_1 + N_2 - mh = ma_ay as we are salling of time when bihe's front full just sales of N_2 = 0 mass of gine m Net foruce Sigma f = r times f prition was lant mu_1 in x direction -mg (h - d) + ma_a x times L in y direction ma_a y (h - d) Because a_ay = 0 Consider -ma_a L = -mg(h - d) - ma_ay(h - d) max in x direction is adieveal = a_ax = a_max condriy firiclia mu_1 N_1 = m_a max, ma_max L = -mg(h - d) -a_max L = -(h - d) a_max = (h - d)/L g a_max depends on dislance slow the ionecls. Distance of list wheel from contive of mass height of centure of mass from wheel or road.