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What if the upward force of an object is more than the downward force of an object?
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Why do airplanes defy gravity?
Airplanes do not "defy gravity", any more than you do when you walk upstairs. In both cases, an upward force is generated that is greater than the downward force of gravity on an object. Since the net force on the object is then upward, the object accelerates upward.
How big is the upward force compared to the downward force?
Down ward force is greater than upward force because everything on earth, obeys the laws of gravity, and for a rocket to take off from earth it needs more energy in other to fight the earths gravitational force but despite fighting the gravitational force it still doesnt take off with a full speed, But for a body of mass to fall from the atmosphere its falls with a great speed due to the force of the earths gravity.
What cause terminal velocity?
For a particular object falling through the air, the force of gravity accelerates the object, while the force of drag increases as the object's velocity increases. At some point the object's upward drag is equal to the downward force of gravity, and no more acceleration occurs (Newton's First Law). Some factors change this a bit: 1) The terminal velocity might be high enough to melt the object. 2) We assume constant air density, which is not true since the density of the atmosphere increases the farther an object falls. 3) We assume constant drag, which is not true if the object changes shape or position.
How much force are you exerting when you lift a 50 pound dumbbell?
Any force that is more than 50 pounds will lift a 50-pound object. The greater the force is, the greater the object's upward acceleration, and the sooner the object will reach any given height.
The price level in the US is more flexible downward than upward?
False.
Why do airplanes defy gravity?
Airplanes do not "defy gravity", any more than you do when you walk upstairs. In both cases, an upward force is generated that is greater than the downward force of gravity on an object. Since the net force on the object is then upward, the object accelerates upward.
How big is the upward force compared to the downward force?
Down ward force is greater than upward force because everything on earth, obeys the laws of gravity, and for a rocket to take off from earth it needs more energy in other to fight the earths gravitational force but despite fighting the gravitational force it still doesnt take off with a full speed, But for a body of mass to fall from the atmosphere its falls with a great speed due to the force of the earths gravity.
When the buoyant force on a submerged object is more than the weight of the object?
The net force on the object is upward, so the object accelerates upward in the fluid.
What cause terminal velocity?
For a particular object falling through the air, the force of gravity accelerates the object, while the force of drag increases as the object's velocity increases. At some point the object's upward drag is equal to the downward force of gravity, and no more acceleration occurs (Newton's First Law). Some factors change this a bit: 1) The terminal velocity might be high enough to melt the object. 2) We assume constant air density, which is not true since the density of the atmosphere increases the farther an object falls. 3) We assume constant drag, which is not true if the object changes shape or position.
How much force are you exerting when you lift a 50 pound dumbbell?
Any force that is more than 50 pounds will lift a 50-pound object. The greater the force is, the greater the object's upward acceleration, and the sooner the object will reach any given height.
Why do ship sink deeper in fresh water than in salt water?
Any thing from people to ships are more buoyant in freshwater than in saltwater. Buoyancy is determined by the downward and upward force of an object. Also, saltwater weighs more than freshwater, so objects are more buoyant in the heavier water.
Why do ships sink deeper in fresh water than in salt water?
Any thing from people to ships are more buoyant in freshwater than in saltwater. Buoyancy is determined by the downward and upward force of an object. Also, saltwater weighs more than freshwater, so objects are more buoyant in the heavier water.
The price level in the US is more flexible downward than upward?
False.
Tell a little about buoyancy?
Buoyancy is the upward force on an object produced by surrounding liquids or gas in which it's immersed due to pressure difference of the fluid between the top and bottom of the object. (ability of an object to float in a liquid) (upward force that keeps an object afloat) For an object to float it needs to have a lesser density then water If an object weighs more than it's buoyancy it sinks, if it weighs less, it floats.
How does gravity affect dance?
In low gravity- less effort and slow motion in upward and downward movement. in higher gravity - more effort and slow motion in upward movement and vice versa for downward movement.
How does Newton's laws pertain to cheerleading?
Newton's first law: The person is at rest while she (I'll pretend it's a girl) is on the ground because no net force is acting on her. Then she is thrown in the air by the force of those throwing her- why does she come down? If we assumed that there was no forces acting on her, she would continue rising forever, but since she falls, there must be a force which causes her motion to change (i.e. to slow down and then reverse direction). That force is gravity. Once on the ground again, she is no longer in motion because the downward pull of gravity is balanced by the upward normal force of the ground, and the net effect is zero force. Newton's second law: When in the air, the girl is moving initially with upward velocity, but she slows down and then starts to fall. She must be experiencing a downward force, which again is the force of gravity. You know this because she is accelerating downward, so then you can conclude that gravity is acting in a downward direction. You can work out this part with numbers if you want. Newton's third law: Ask the throwers- do they feel anything when they throw the girl in the air? They definitely feel pressure on their arms/hands as they throw her upward, because as they exert and upward force on her, she exerts a downward force on them equal in magnitude. The harder they throw her, the more the force they feel on themselves.
How do you make a substance that is more dense than water float?
Spread out the weight of the object until the force of the object pressing down on the water in any one spot is less than the force/resistance of the water pushing up. For example, a human can not stand on water, but a human can stand on a piece of plywood that is laying on the water and not get wet. The plywood effectively spreads out the weight of the person until the combined downward force of the person/plywood in any one location is less that the upward force of the water.
