Question

I could not lift the box into truck so I pushed it up on _______​

Answer 1

plank

Explanation:

hope it'll help you

Answer 2

Inclined plane.

• An inclined plane is a simple machine that consists of a sloping surface that can be used to raise heavy bodies.
• The slope of the plane considerably reduces the force required to move the weight of the body. With the increase in slope, the force required becomes more and more equal to the weight.
• Mathematically, the amount of force F required to move a body of weight W up the slope of an inclined plane is- F = W sin θ.
• To lift the box into the truck, it is easier to push it up an inclined plane than to lift it up vertically.