Question

What principle explains why lifting heavy objects is easier using ramps?

Answer 1

Answer:

Inclined Plane

Explanation:

An inclined plane, also known as a ramp, is a flat supporting surface tilted at an angle, with one end higher than the other, used as an aid for raising or lowering a load. The inclined plane is one of the six classical simple machines.

The basic principle of Inclined pane is as follows

W = F x D ( Force times Distance)

where W shows the word done.

Answer 2

The work involved in lifting the heavy object can be describes as:

$Work = Force \times Distance = mgh$

Work required to lift the object to the same height is independent of the path by which it is taken there.The machines such as ramps do not decrease the work. These help in making our work easier. Due to ramp, we have to push to a longer distance but less effort i.e. less force is required to do the same amount of work.

The force to be exerted in absence of inclined plane is mg ( weight of the object). On the other hand, the force exerted on an inclined plane is reduced by sinθ (F=mg sinθ) value of sinθ lies between 0 and 1.

Hence, it becomes easier to lift a heavy object using ramp.