In order to lift a 270 kg, which is about 596 pounds rock one foot off the ground you will need a forklift or other weight lifting machinery. A normal person will not be able to lift a rock that heavy on their own.
The height is irrelevant. The energy required depends on the height; the force does not. The weight of an object, and therefore the force required to lift it, is mass x gravity - about 500 Newtons.The height is irrelevant. The energy required depends on the height; the force does not. The weight of an object, and therefore the force required to lift it, is mass x gravity - about 500 Newtons.The height is irrelevant. The energy required depends on the height; the force does not. The weight of an object, and therefore the force required to lift it, is mass x gravity - about 500 Newtons.The height is irrelevant. The energy required depends on the height; the force does not. The weight of an object, and therefore the force required to lift it, is mass x gravity - about 500 Newtons.
4,000 foot pounds of energy (work) for each foot highyou lift it off the ground,regardless of whether you do it with a lever, a pulley, a jack, a hydraulic lift, oryour bare hands.
Gravity
320
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.
The height is irrelevant. The energy required depends on the height; the force does not. The weight of an object, and therefore the force required to lift it, is mass x gravity - about 500 Newtons.The height is irrelevant. The energy required depends on the height; the force does not. The weight of an object, and therefore the force required to lift it, is mass x gravity - about 500 Newtons.The height is irrelevant. The energy required depends on the height; the force does not. The weight of an object, and therefore the force required to lift it, is mass x gravity - about 500 Newtons.The height is irrelevant. The energy required depends on the height; the force does not. The weight of an object, and therefore the force required to lift it, is mass x gravity - about 500 Newtons.
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.
You are able to jump by using your feet to apply force to the ground and then using this force to allow you to lift off the ground.
The choices are:A. Doubles the force required to lift the blockB. Decreases the force required to lift the blockC. Makes the block easier to lift by changing the direction of the force needed to lift it.D. Decreases the force required and changes the direction of the force required
4,000 foot pounds of energy (work) for each foot highyou lift it off the ground,regardless of whether you do it with a lever, a pulley, a jack, a hydraulic lift, oryour bare hands.
Gravity
320
it dosent, its very hard to get a space shuttle off the ground it uses thaousands of pounds of force to lift it.
This is true
The upward force balances exactly you weight so the resultant force is zero and you stay on the ground, fortunately!
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.
Thrust . i mean a force required to overcome the gravity of earth and which is greater than its weight.