Question

In practice, the suspension system of a car consists of a spring under compression combined with a shock absorber which damps the vertical oscillations of the car. Draw sketch graphs, one in each case, to illustrate how the vertical height of the car above the road will vary with time after the car has just passed over a hump if the shock absorber is: (i) not functioning. (ii) operating normally.

When the driver of mass 80 kg, steps into the car of mass 920 kg, the vertical height of the car above the road decreases by 2.0 cm. If the car is driven over a series of equally spaced humps, the amplitude of the vibration becomes much larger at one particular speed. (i) Explain why this occurs.

(ii) Calculate the separation of the humps if it occurs at a speed of 15 ms-1.

Answer 1

lasmalees Lo hotleal boei LA her sed oves ecieases

lasje belemesv because ot tlstSpeed late Aesonam ce taleat Now heSPArco k先. 3

have le p sang o the knotr んhere 2万 et Ne 久 Те tV 7 ^ z 34 240 N m toco 万

メ3'ly | o.oa55 Tums Puicd Vele cuib orm