A fault has developed in a car. A mechanic uses a machine to drag the car up onto a recovery vehicle, as shown in Fig. 3.1.
(a(i))[3]
Calculate the moment of the 26 N force about the pivot, using the information in Fig. 3.2.
(a(ii))[1]
Describe one way in which the mechanic can increase the moment of the 26 N force about the pivot.
(b)[4]
Calculate the minimum work done on the car when it is lifted from the ground onto the recovery vehicle. Include the unit.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Moment equals force \times perpendicular distance from pivot” …