Here a stone is sliding down a friction-free incline. Identify the forces that a
ID: 2278693 • Letter: H
Question
Here a stone is sliding down a friction-free incline. Identify the forces that act on it, and draw appropriate force vectors?Draw the vectors starting at the black dot. The location and orientation of the vectors will be graded. The exact length of your vectors will not be graded but the relative length of one to the other will be graded. Here a stone is sliding down a friction-free incline. Identify the forces that act on it, and draw appropriate force vectors?
Draw the vectors starting at the black dot. The location and orientation of the vectors will be graded. The exact length of your vectors will not be graded but the relative length of one to the other will be graded.
Explanation / Answer
Actually there is no "pull forward due to the incline of the ramp." There is only the force of gravity (which is at an angle to the surface of the ramp) and the normal force (which is perpendicular to the surface of the ramp). These vectors are not exactly opposed to each other in direction, so there is some component that accelerates the stone parallel to the surface of the ramp. That sum of the two original vectors is what you are taking to be the "pull forward due to the incline of the ramp." It is, instead, the net force acting on the stone.
Incidentally, the normal force is equal and opposite to the component of the vertical gravity vector that is perpendicular to the surface of the ramp. The steeper the ramp, the smaller that component is and the more gravitational force is left over to accelerate the stone
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.