If a rocket exerts a greater downward force than the force with which gravity pulls on, it will accelerate upwards.
For an airplane to fly, it must always engage in a tug of war between the opposing forces of lift versus weight and thrust versus drag. For a moment, think of an airplane moving from right to left and the flow of air moving from left to right. The weight or force due to gravity pulls down on the plane opposing the lift created by air flowing over the wing. Thrust is generated by the propellor and opposes drag caused by air resistance to the airplane. During take off, thrust must be greater than drag and lift must be greater than weight so that the airplane can become airborne. For landing thrust must be less than drag, and lift must be less than weight. Hope this helps
i would suppose that it's because the incline is greatest then..but i suppose rocket means "something unmanned lol". the idea i have in my head says something along the lines of, the object has a path of of travel and when its moving it has a projected path of travel. so if the propellant was to be cut off when the rocket is traveling 100mph, it's not just going to stop..it has energy yet to be released. also i believe that things weigh more the faster they are going, according to Einsteins theory of relativity. but when things aren't moving they don't have a projected path of travel that is anywhere else other than where it is, then. so probably because motion must be established, and once it is, the forward motion of the object aids the propellant, if you will..or is less resistance for the propellant.
Buttresses strengthen an arch by transferring the weight and lateral forces acting on the arch to the ground. They provide additional support by countering the outward thrust generated by the arch's curve, preventing it from collapsing. By effectively distributing these forces, buttresses enhance the stability and structural integrity of the arch, allowing for larger spans and greater loads. Overall, they play a crucial role in maintaining the arch's shape and function over time.
Aerodynamics is the study of the way in wich objects move through the air. If something such as a car has an aerodynamic shape or design, it goes faster and uses less fuel than other cars because the air passes over it more easily. The form of a aerodynamic is used as a modifier.
Because the weight of the water in the trap must be greater than the esp or the trap will be ineffective,and the trap size dictates how much water it can hold thus determining the weight.
They must have sufficient thrust from their engines and lift from their wings to overcome their weight and the aerodynamic drag forces. Most rockets do not have sufficient wings to lift them but their engines provide a thrust force that is greater than their weight and it keeps pushing them vertically in the air.
The payload's weight, and the weight of the rocket itself.
During a rocket launch, the thrust of the rocket engine is greater than the weight of the rocket. This is necessary for the rocket to overcome Earth's gravitational pull and lift off into space. The thrust generated pushes the rocket upwards while gravity pulls it down.
Although some rockets still use short fins to stabilize their flight, many rockets use a computer-controlled movement of their engine nozzles. The directional thrust is balanced to achieve the proper trajectory. Another way to maintain even vertical thrust is by a slow roll or spin.
The four basic forces acting on an aircraft are Lift, Weight (Gravity), Thrust, and Drag. In order for an aircraft to ascend, Lift must be greater than Weight, and Thrust must be greater than Drag.
Thrust is the force generated by an engine to propel an object forward, like an airplane. Weight is the force of gravity acting on an object, pulling it downward towards the Earth. In order for an object to fly, the thrust generated by its engines must be greater than its weight.
In aviation terms, weight is the gravity pulling you down, which prevents us from floating around in the air. Also, thrust is the power the turbine, or the propeller, generates that pushes the airplane forward.
Thrust . i mean a force required to overcome the gravity of earth and which is greater than its weight.
That depends on its weight. Minimally it must exert a thrust greater than or equal to its own weight, or it will just sit there.
Rockets are affected by thrust (produced by engines), drag (air resistance), gravity (pulling the rocket down), and mass (the rocket's weight and payload). These factors impact the rocket's ability to overcome gravity and travel through the atmosphere.
rockets have more disadvantages than advantages rockets are extremely inefficient they consume enormous amounts of fuel, and most still use liquid propellant which is hard to find in space, they do however have a huge thrust to weight ratio
An object can fly when the forces of lift and thrust are greater than the forces of weight and drag. Lift is generated by the shape of the object (such as wings on an airplane) and thrust is the force that propels the object forward.