Question

A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting force does work in raising the helicopter. An 840−kg helicopter rises from rest to a speed of 10.5 m/s in a time of 5.0 s. During this time it climbs to a height of 8.4 m. What is the average power generated by the lifting force?

Answer 1

The average power generated by the lifting force is 7,800 W (watts).

Step-by-step explanation:

To find the average power generated by the lifting force, we can use the equation:
Power = Work / Time
The lifting force does work in raising the helicopter, which can be calculated using the formula:

Work = Force x Distance
iven that the helicopter has a mass of 840 kg, rises from rest to a speed of 10.5 m/s in 5.0 s, and climbs to a height of 8.4 m, we can use the formulas:

Force = mass x acceleration

Distance = 0.5 x acceleration x time^2

Plugging in the values and performing the calculations, we find that the average power generated by the lifting force is 7,800 W (watts).