forces
... determine distance, instant & average speed, or acceleration. 2. Describe how the various balanced and unbalanced forces can have an effect on an object’s motion. 3. Apply Newton’s Laws to real world examples. 4. Analyze the methods by which machines make work easier. 5. Examine situations where kin ...
... determine distance, instant & average speed, or acceleration. 2. Describe how the various balanced and unbalanced forces can have an effect on an object’s motion. 3. Apply Newton’s Laws to real world examples. 4. Analyze the methods by which machines make work easier. 5. Examine situations where kin ...
force
... What about the ladder on top of the truck? The ladder is in motion because the truck is in motion. When the truck stops, the ladder stays in motion. The truck is stopped by the force of the car, but the ladder is not. What force makes the ladder fall while it is moving ...
... What about the ladder on top of the truck? The ladder is in motion because the truck is in motion. When the truck stops, the ladder stays in motion. The truck is stopped by the force of the car, but the ladder is not. What force makes the ladder fall while it is moving ...
3-8 A Method for Solving Problems Involving Newton`s
... The only change here is an increase in the tension. Check the two expressions for tension to make sure that they are consistent with one another. (b) The elevator could actually be moving in any direction and have an upward acceleration. For instance, if the elevator is gaining speed while moving up ...
... The only change here is an increase in the tension. Check the two expressions for tension to make sure that they are consistent with one another. (b) The elevator could actually be moving in any direction and have an upward acceleration. For instance, if the elevator is gaining speed while moving up ...
You Can Not FORCE Me to Do It!
... – This is why when you drop something, it always falls down and does not float up. ...
... – This is why when you drop something, it always falls down and does not float up. ...
Equilibrium & Elasticity
... The center of gravity (cog) of a regularly shaped body of uniform composition lies at its geometric center. The (cog) of the body can be located by suspending it from several different points. The cog is always on the line-ofaction of the force supporting the object. ...
... The center of gravity (cog) of a regularly shaped body of uniform composition lies at its geometric center. The (cog) of the body can be located by suspending it from several different points. The cog is always on the line-ofaction of the force supporting the object. ...
posted
... IDENTIFY: Apply the first and second conditions for equilibrium to the ladder. SET UP: Let n2 be the upward normal force exerted by the ground and let n1 be the horizontal normal force exerted by the wall. The maximum possible static friction force that can be exerted by the ground is s n2 . EXECUT ...
... IDENTIFY: Apply the first and second conditions for equilibrium to the ladder. SET UP: Let n2 be the upward normal force exerted by the ground and let n1 be the horizontal normal force exerted by the wall. The maximum possible static friction force that can be exerted by the ground is s n2 . EXECUT ...
國立彰化師範大學八十八學年度碩士班招生考試試題
... 2. (a) A non-conducting thin circular disk of radius R has a uniform surface charge density (C/m2). Determine the potential V along the axis of the disk at a distance x from its center. (b) Using the result of (a), obtain the electric field E for an infinite plate with surface charge density (C/ ...
... 2. (a) A non-conducting thin circular disk of radius R has a uniform surface charge density (C/m2). Determine the potential V along the axis of the disk at a distance x from its center. (b) Using the result of (a), obtain the electric field E for an infinite plate with surface charge density (C/ ...
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.