My son can lift and carry 25lbs... though he's really big for a four year old.
11.34 kg
25lbs
25lbs
The force needed to lift a weight of 200N would be 200N. This is because the force needed to lift an object against gravity is equal to the weight of the object itself.
Measure how much it can lift.
If the weight is 300 pounds, you will need to apply a force of at least 300 pounds to lift it against the force of gravity. This force is known as the weight of the object.
The same force as the weight of the helicopter and its crew and cargo.
In order to lift off the ground, the lift force (the upward force generated by the wings) has to be at least as great as the weight of the aircraft. Lift and weight are opposing forces and are equal in straight and level flight.
If you have 2 pulleys in a system to lift a 100 lb object, the amount of force required to lift it would be 50 lbs. This is because the weight is distributed evenly between the two pulleys, therefore reducing the force needed to lift the load.
If the pulley is fixed (hanging from the ceiling), and the rope passes over it, then 100 lbs of force is required. If the rope is fixed to the ceiling and passes under the pulley (which is fixed to the load), then 50 lbs of force is required.
To lift 200 pounds of weight, you would need to apply a force equal to the weight being lifted, which in this case is 200 pounds. This is because the force needed to lift an object against gravity is equal to its weight.