The length of the inclined plane is 2.5 m, and the height is 50 cm. To lift a load weighing 40 kg along

The length of the inclined plane is 2.5 m, and the height is 50 cm. To lift a load weighing 40 kg along the inclined plane, a force of 100N is required. What is the efficiency of the inclined plane?

S = 2.5 m.

h = 50 cm = 0.5 m.

m = 40 kg.

g = 9.8 m / s2.

F = 100 N.

Efficiency -?

The coefficient of efficiency shows how much of the work Azatr spent on doing the useful work of Apol.

Efficiency = Apol * 100% / Azatr.

Useful work when lifting a load Apol is determined by the formula: Apol = m * g * h.

We will express the expended work of Azatr with the formula: Azatr = F * S, where F is the force with which the load is pulled, S is the movement of the load, in our case the length of the inclined plane.

Efficiency = m * g * h * 100% / F * S.

Efficiency = 40 kg * 9.8 m / s2 * 0.5 m * 100% / 100 N * 2.5 m = 78.4%.

Answer: the inclined plane has an efficiency of 78.4%.

S = 2.5 m.

h = 50 cm = 0.5 m.

m = 40 kg.

g = 9.8 m / s2.

F = 100 N.

Efficiency -?

The coefficient of efficiency shows how much of the work Azatr spent on doing the useful work of Apol.

Efficiency = Apol * 100% / Azatr.

Useful work when lifting a load Apol is determined by the formula: Apol = m * g * h.

We will express the expended work of Azatr with the formula: Azatr = F * S, where F is the force with which the load is pulled, S is the movement of the load, in our case the length of the inclined plane.

Efficiency = m * g * h * 100% / F * S.

Efficiency = 40 kg * 9.8 m / s2 * 0.5 m * 100% / 100 N * 2.5 m = 78.4%.

Answer: the inclined plane has an efficiency of 78.4%.