0
What else can I help you with?
Why does a rope climber pull downward on the rope to move upward?
The climber is actually pulling downwards on the rope. S/he is trying to pull the rope down or out of the ceiling but cannot do so. If you think of the climber just hanging there the rope has a tension upwards to counter the weight of the climber. If you are to move up then equilibrium must be broken and the net force on the climber must be up so the rope pulls the climber upwards. Of course, this pull is to do with action and reaction but the effect is the same.
Why must lift be equal to the force of gravity on an airplane?
For an airplane to maintain level flight, the lift force generated by the wings must equal the force of gravity acting on the airplane. This balance ensures that the airplane neither climbs nor descends while in flight.
To keep a sled accelerating downhill what must the force of gravity be greater than?
To keep a sled accelerating downhill, the force of gravity must be greater than the force of friction acting against the sled. This allows gravity to overcome the frictional force and propel the sled forward.
To stop the table in your class falling through the floor what must the floor do against the force of gravity pulling the table down?
The floor must exert a force equal to that of the force exerted on the desk from gravity. This force is called a "normal force"
When is work said to be done against the force of gravity?
All bodies with mass are attracted to the Earth by gravity, so when a body is raised you must do work to raise it. This work is equal to force x height, if force is in Newtons and height in meters, the work is in units of Joules.
Why does a rope climber pull downward on the rope to move upward?
The climber is actually pulling downwards on the rope. S/he is trying to pull the rope down or out of the ceiling but cannot do so. If you think of the climber just hanging there the rope has a tension upwards to counter the weight of the climber. If you are to move up then equilibrium must be broken and the net force on the climber must be up so the rope pulls the climber upwards. Of course, this pull is to do with action and reaction but the effect is the same.
Why must lift be equal to the force of gravity on an airplane?
For an airplane to maintain level flight, the lift force generated by the wings must equal the force of gravity acting on the airplane. This balance ensures that the airplane neither climbs nor descends while in flight.
To keep a sled accelerating downhill what must the force of gravity be greater than?
To keep a sled accelerating downhill, the force of gravity must be greater than the force of friction acting against the sled. This allows gravity to overcome the frictional force and propel the sled forward.
To stop the table in your class falling through the floor what must the floor do against the force of gravity pulling the table down?
The floor must exert a force equal to that of the force exerted on the desk from gravity. This force is called a "normal force"
When is work said to be done against the force of gravity?
All bodies with mass are attracted to the Earth by gravity, so when a body is raised you must do work to raise it. This work is equal to force x height, if force is in Newtons and height in meters, the work is in units of Joules.
What must climber have for climbing Mount Everest?
Apart from all the clothing and equipment that a climber will need while on Mount Everest the main thing required is experience at climbing other high altitude mountains.
When you sit in a chair what force does it exert against you?
A force exactly equal to the weight of your posterior against the chair. You know positively that the forces there must exactly cancel and add to zero, otherwise a net, non-zero force would be present, and your butt would accelerate.
When a force moves objects over a rough horizontal surface at a constant velocity the work done against friction must?
When a force moves objects over a rough horizontal surface at a constant velocity, the work done against friction must be equal to the work done by the applied force to maintain the constant velocity. This is because the force of friction opposes the motion of the object, so the work done by the applied force must overcome the work done by friction to keep the object moving at a constant speed.
What experience does someone need to be a tree surgeon?
To be tree surgeon one needs to be an experienced climber. And along with being an experienced climber one must also be an experienced technician, and to be able to use complicated and dangerous equipment.
What conditions must be met for work to be done?
1. A force is needed 2. The point of application of the force is to be displaced. 3. If the displacement is in the direction of the force then work is said to be done by the force and if the direction of displacement is opposite to the force then work is done against the force.
Static friction is the force that must be overcome in order to start something moving?
that is true
What forces must be overcome while on a moving swing?
While on a moving swing, you must overcome air resistance, the force that opposes the motion of the swing through the air. Additionally, you must overcome friction in the pivot points of the swing that can slow down your movement. Finally, you must generate enough force with your body to maintain the swinging motion against the gravitational force pulling you downward.
