You are moving furniture into a moving truck that is 1 meter above the ground. You have two identical chairs, weighing 70 lbs (31.8 kg) each, which need to be moved into the truck How much force does it require to lift the first chair into the truck?

How much work does it require to lift the first chair into the truck?

How much work does it require to push the second chair up the 3 m ramp into the truck?

Suddenly you realize there is a 3 m ramp. How much force does it require to push the second chair up the ramp into the truck?