Free Body Diagrams PP
... 1. Isolate the object of interest. Draw the object as a point particle representing the same mass. 2. Sketch and label each of the external forces acting on the object. 3. Choose a coordinate system, with the direction of motion as one of the positive coordinate axes. 4. If all forces do not line up ...
... 1. Isolate the object of interest. Draw the object as a point particle representing the same mass. 2. Sketch and label each of the external forces acting on the object. 3. Choose a coordinate system, with the direction of motion as one of the positive coordinate axes. 4. If all forces do not line up ...
gravitation and cogravitation
... paper 1905 creating the special theory of relativity changed once more the meaning of this velocity. He considered it as the velocity of the test body relative to a frame of reference or to an observer. All of this has led to many confusions and misunderstandings in physics. Even when presenting a s ...
... paper 1905 creating the special theory of relativity changed once more the meaning of this velocity. He considered it as the velocity of the test body relative to a frame of reference or to an observer. All of this has led to many confusions and misunderstandings in physics. Even when presenting a s ...
Static Equilibrium Lab
... be the geometrical center of the object The motion of any rigid body of mass m can be described as the trajectory through space of a point mass m located at its center of mass on which is superposed rotation of the object about the center of mass For the purpose of calculating torques, all the weigh ...
... be the geometrical center of the object The motion of any rigid body of mass m can be described as the trajectory through space of a point mass m located at its center of mass on which is superposed rotation of the object about the center of mass For the purpose of calculating torques, all the weigh ...
Newton`s 2nd Law of Motion - Garnet Valley School District
... • Contact forces: • _____________- (Ft or T) - The force that a “string” pulls on an object • _______________- (FN or N) - Force that a surface applies to an object (the direction is to the surface) • __________- (Ff) - To be defined later ...
... • Contact forces: • _____________- (Ft or T) - The force that a “string” pulls on an object • _______________- (FN or N) - Force that a surface applies to an object (the direction is to the surface) • __________- (Ff) - To be defined later ...
Weightlessness
Weightlessness, or an absence of 'weight', is an absence of stress and strain resulting from externally applied mechanical contact-forces, typically normal forces from floors, seats, beds, scales, and the like. Counterintuitively, a uniform gravitational field does not by itself cause stress or strain, and a body in free fall in such an environment experiences no g-force acceleration and feels weightless. This is also termed ""zero-g"" where the term is more correctly understood as meaning ""zero g-force.""When bodies are acted upon by non-gravitational forces, as in a centrifuge, a rotating space station, or within a space ship with rockets firing, a sensation of weight is produced, as the contact forces from the moving structure act to overcome the body's inertia. In such cases, a sensation of weight, in the sense of a state of stress can occur, even if the gravitational field was zero. In such cases, g-forces are felt, and bodies are not weightless.When the gravitational field is non-uniform, a body in free fall suffers tidal effects and is not stress-free. Near a black hole, such tidal effects can be very strong. In the case of the Earth, the effects are minor, especially on objects of relatively small dimension (such as the human body or a spacecraft) and the overall sensation of weightlessness in these cases is preserved. This condition is known as microgravity and it prevails in orbiting spacecraft.