A front loader of mass 4.5 Mg is shown in side view as it lifts a 0.75-Mg load of gravel...

A front loader of mass 4.5 Mg is shown in side view as it lifts a 0.75-Mg load of gravel (Figure P4.20).

(a) Draw a free body diagram of the front loader.

(b) Determine the contact forces between the wheels and the ground.

(c) How heavy a load can be carried before the loader will start to tip about its front wheels?