A labourer has to push a heavy truck What should be done to reduce his effort in pushing it - Science - Friction

Question

A labourer has to push a heavy truck What should be done to
reduce his effort in pushing it and why?

Rahul Jakhmola · Accepted Answer

As this in the topic of friction, he could apply grease or oil
on the bearings of the bearings of the wheels so as to reduce the
friction and provide efficient movement
Also, unloading can reduce the normal reaction by reducing the
weight and thus reduce friction in turn

A labourer has to push a heavy truck. What should be done to reduce his effort in pushing it and why?