Calculate Lift Force of 4510 kg Helicopter Accelerating Upward

In summary, lift force for a helicopter is calculated using the formula: Lift force = mass x acceleration due to gravity x vertical velocity. Calculating lift force is important for understanding the helicopter's performance and capabilities, such as its maximum weight and power needed for takeoff. The lift force is directly proportional to the helicopter's mass, meaning a heavier mass requires more lift force. Factors that can affect lift force include rotor blade design, angle of attack, air density, and speed. The lift force is also directly related to the helicopter's acceleration, increasing as the helicopter accelerates upward to maintain altitude.
  • #1
decile
3
0
A 4510 kg helicopter accelerates upward at 2.1 m/s^2. What lift force is exerted by the air on the propellers?

The answer is in Newtons.

If you can give me an equation, that would be great. Thanks
 
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  • #2
What have you tried? I would think your book or instructor would have given you some equations of motion. Nothing?
 
  • #3
I looked through all equations in the chapter and none seem to fit.
 
  • #4
How about Newtons' Second Law of motion?
 
  • #5
k Newton's second law

a = Fnet/m

so 2.1 = Fnet/4510 and for Fnet you get 9471 but what then
 

FAQ: Calculate Lift Force of 4510 kg Helicopter Accelerating Upward

How is lift force calculated for a helicopter?

Lift force for a helicopter is calculated using the following formula: Lift force = mass x acceleration due to gravity x vertical velocity. In this case, the mass would be 4510 kg, the acceleration due to gravity is 9.8 m/s², and the vertical velocity is the rate at which the helicopter is accelerating upward.

What is the significance of calculating lift force for a helicopter?

Calculating lift force is important for understanding the performance and capabilities of a helicopter. It helps determine the maximum weight that a helicopter can carry and the amount of power needed for it to take off and maintain its altitude.

How does the lift force of a helicopter change with different masses?

The lift force of a helicopter is directly proportional to its mass. This means that as the mass increases, the lift force also increases. So, a helicopter with a heavier mass will require more lift force to stay airborne.

What factors can affect the lift force of a helicopter?

The lift force of a helicopter can be affected by several factors, including the design and shape of the rotor blades, the angle of attack of the blades, air density, and the speed of the helicopter. Changes in any of these factors can result in changes in the lift force of the helicopter.

How is the lift force of a helicopter related to its acceleration?

The lift force of a helicopter is directly related to its acceleration. As the helicopter accelerates upward, the lift force must increase to counteract the increase in weight due to the acceleration. This allows the helicopter to maintain its altitude and continue moving upward.

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