PHYS Pre Lab Chapter 5

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Apr 3, 2024

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PHYS Pre Lab Chapter 5 - Conservation of Energy Chloe Kalahar 1. Question [5.1]: a. Increasing the ramp angle would increase acceleration, therefore decreasing the time it would take for the car to get to the bottom of the ramp b. Decreasing the ramp angle would decrease acceleration, therefore increasing the time it would take for the car to get to the bottom of the ramp c. Increasing the car’s mass would increase momentum with mass pulling down the ramp, but the time it would take to get to the bottom of the ramp would stay the same because mass doesn’t affect velocity d. Decreasing the car’s mass would take away from that momentum but still would not change the amount of time it would take to get to the bottom of the ramp 2. Question [5.2] Ramp Angle (°) Time to ground (s) 20 1.28 40 0.84 60 0.71 Table 1 - Time (s) it took for a cart to reach the ground from a 2.0m distance when changing the angle (°) of the ramp Cart Mass (kg) Time to ground (s) 0.05 1.04 0.10 1.04 0.15 1.04 Table 2 - Time (s) it took for a cart to reach the ground from a 2.0m distance at a 30 ° angle when changing the cart mass (kg) 3. Question [5.3] a. Increasing the ramp angle decreased the amount of time it took for the car to reach the bottom of the ramp. Increasing the cart mass didn’t affect the amount of time it took for the car to reach the bottom of the ramp. This is related to the car’s velocity because increasing the ramp angle increases velocity, but changing the mass of the car only allows it to go farther instead of increasing velocity and speed. Mass does not affect velocity. 4. Question [5.4] a. The combination of car mass and ramp angle that would result in the shortest time for the car to reach the bottom of the ramp would be the highest ramp angle (in the simulation it is 90 °), and the mass of the car does not matter. I tested
PHYS Pre Lab Chapter 5 - Conservation of Energy Chloe Kalahar various different car masses with this angle and all of them had the exact same time to ground which was 0.64 s with a 2.0m distance up the ramp. I observed that as the ramp angle increases, the time to ground decreases, therefore the highest ramp angle yields the shortest time to ground. Again, it was also proven that car mass doesn’t affect the time to ground so that is why it doesn’t matter the value.
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