Gravity and weight.
The Chinook helicopter is an American twin-engine helicopter. The helicopter is used by military forces. The Chinook helicopter is mainly used for troop transportation, artillery movement, and resupply on the battlefield.
Chinook is a helicopter used by many armies and air forces around the world.
Your mother.
I do not understand!
Thrust, Drag, Lift, Weight (Gravity).
When a helicopter is hovering (aka "still") it has the force of gravity pushing "down" toward the Earth and the force of "lift" of the spinning rotor blade(s) pushing against the surrounding air. When the gravitational force is equal to the force of lift the helicopter hovers on the vertical axis.
2007 Bell Helicopter Armed Forces Bowl - 2007 TV was released on: USA: 31 December 2007
2009 Bell Helicopter Armed Forces Bowl - 2009 TV was released on: USA: 31 December 2009
2010 Bell Helicopter Armed Forces Bowl - 2010 TV was released on: USA: 30 December 2010
The main forces acting on a shuttle on the launch pad are the gravitational force pulling it downwards, the normal force exerted by the ground pushing it upwards, and possibly wind resistance. Additionally, the rocket engines may be applying a thrust force in preparation for launch.
Thrust, gravity and upthrust help launch a rocket.
in a machine it`s the ratio of the load overcomed to the effort