ANSWERS: B,B,D
Although a, "Centripetal," acceleration can be applied into the equation for Newton's Second Law, there is no centripetal force. Any, "Centripetal," Force is simply a center-seeking Net Force, and is therefore a special case of Net Force and not a new force.
The equation for this special type of acceleration is the velocity squared divided by the radius, and therefore any object's force that fits this special scenario can be described as (Fnet = m * (V^2 / R). This is very similar to Newton's second law, with the centripetal acceleration substituted in for, "a." |
Universal Gravitation
Universal gravitation is a concept that can apply to any place in .the universe with any two objects. Whereas the equation Fg = mg is applicable on almost any location of Earth, it is not true for objects in orbit or in other places in the universe. Newton developed a new formula for the Gravitational Force, which can be applied to any location in the universe.
The formula he created is described as Fg = (G * (m1 * m2)) / R^2. In this equation: Fg is the force of gravity acting on an object. According to Newton's third law, this applies to the force on both objects as the force will be equal and opposite to the force on the other object in the system. The units for Fg are N. G is Newton's Universal Gravitational constant. It has a value of 6.67 * 10^-11. The units for this constant are Nm^2 / kg^2. m1 is the mass of object 1, with m2 being the mass of object 2. The units for these masses are kg. R is the distance between the centers of masses. The units for R are m, but in the equation the value of R is squared, so this makes the units m^2. |
Widget is loading comments...