Using ( ) and [ ] around letters for specifics \"A box slides down a ramp..\" 7)
ID: 1881145 • Letter: U
Question
Using ( ) and [ ] around letters for specifics "A box slides down a ramp.."
7) [Horizontal-ish] A box slides down a ramp (with some friction) onto a frictionless level surface starting from rest, hits a rubber wall, and bounces back to near the original position but not quite as far. For ease of conveying the answer, feel free to use the following notation: A-the initial position of the box on the ramp B = the position just after the box transitions from ramp to level surface while moving to the right (occurs at the first moment when the box is completely on the level surface) C the position at which the box first touches the rubber wall while still moving right D = the position at which the box pushes the wall its farthest E-the position just before the box stops touching the rubber wall while moving left F = the position just before the box transitions from the level surface to the ramp while still moving left (occurs at the last moment when the box is completely on the level surface) G = the position at which the box stops on the ramp Assume the box does not change its shape Let the +direction be down the ramp and to the right. Let the position 0 at the point where the box is just barely touching the wall Rubber Wall Ramp CD Level Surface For each of the following situations, write down the parts of the box's movement from A to G with the situations, below. Ifa situation can not happen, then write "N/A". a) +Acceleration, a>0 b) 0 Acceleration, a 0 c) -Acceleration, a 0 e) 0Velocity, v=0 f) Velocity, V0 h) 0 Displacement, =0 i) - Displacement, Ax0 k) 0 Position, x=0 -Position,Explanation / Answer
Ans
a) a>0: Positive x is down the ramp and to the right. So acceleration is positive when
1) [box slides down the ramp A to B],
2) [box slides up the ramp from F to G] the box stops at G due to the fact that it's acceleration is down the ramp.
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b)a = 0: The level surface is frictionless surface. So no force in horizontal direction acts on the box.
1)[box moves from B to C].
2) [box moves from E to F]
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c) a<0 : The acceleration is negative when box pushes the wall ie [during C to D] box pushes the wall and [D to E] when wall pushes the box back.
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d) v>0 : When the box is moving to right.
[when box slides from A to just before D] note the box still moves to right after touching the wall at C
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e) v = 0: [When the box is at A, D and G]
At A box starts from the rest. At D wall stops the box and at G it reaches it's maximum height.
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f) v < 0: when the box moves to the left.
1)[When block moves from D to E]
2)[When box slides from E to F]
3)[When the box slides up the ramp from F to G].
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g) Displacement >0 : When the starting point is to the left of the final position as + direction is to the right and down the ramp.( the final position is greater than the initial position]
1) [The motion on the box from A to G] G is less negative.
2) [A to B]
3) [B to C]
4) [C to D]
5) [A to C]
6) [A to D]
7) [A to E]
8) [A to F]
9) [B to D]
10) [B to E]
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h) Displacement = 0: When the final and initial position of the box is the same.
1)[B to F]
2)[C to E]
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i) Displacement <0 : When final position is less than initial position.
1) [D to E]
2) [D to F]
3) [D to G]
4) [E to F]
5) [E to G]
6) [F to G].
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j) x>0 : when the box is to the right of C as at C x = 0(reference]
1) [When the box is at D]
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k) x = 0:
1)[When the box is at C].
2)[When the box is at E].
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l) x<0 : When the box is to the left of the point C
[When the box is at A, B, F, and G].
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