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course Phy 201
Ramp & BallYou allowed a ball to roll from rest down a ramp on a tabletop. The lower end of the ramp was positioned so that the ball could roll continuously off the ramp and into free fall. You observed the horizontal range of the falling ball and the distance of fall.
Insert a copy of your data here, along with any previously submitted work you wish to include:
Trial 1: dv= 35.3 cm/s, a= 14.12cm/s^2 2 dominoes
Trial 2: ds= 60cm, v_ave= 60cm/s, v_f=120cm/s, v_o= 0cm/s a_ave= 120cm/s^2 3 dominoes
Trial 3: dt: .4s, v_f= 140cm/s, v_o= 0cm/s, v_ave= 70 cm/s, a= 350cm/s^2 8 dominoes
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You did trials for three ramps.
Analysis based on projectile motion:
Phy 201 students may assume that the initial projectile velocity is horizontal. University Physics students can do the same as a first approximation, but are expected to also then solve assuming that the initial projectile velocity is parallel to the ramp.
What was the horizontal velocity of the ball as it fell to the floor?
T 1: 35.3 cm/s
T 2: 120 cm/s
T 3: 140 cm/s
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What was the final velocity for each ramp slope?
T 1: 35.3 cm/s
T 2: 120 cm/s
T 3: 140 cm/s
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Based on your result and the length of the ramp, what would have been the acceleration of the ball on the ramp?
T 1: 14.12 cm/s^2
T 2:120 cm/s^2
T 3: 350 cm/s^2
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Graph acceleration vs. ramp slope and find the slope of this graph.
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What do you think is the percent uncertainty in your measurement of the horizontal distance traveled by the ball from the end of the ramp to the floor?
+ or - .02 or 2%
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What do you think is the percent uncertainty in your measurement of the vertical distance traveled by the ball from the end of the ramp to the floor?
+ or - .02 or 2%
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What do you think is the percent uncertainty in your measurement of the distance traveled by the ball from release to the end of the ramp?
+ or - .02 or 2%
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What therefore do you think is the percent uncertainty in each of the following quantities, as you have calculated them?
• the time required to fall to the floor + or - .05 or 5%
• the horizontal velocity of the ball during its fall + or - .01
• the acceleration of the ball on the ramp + or - .01
• the slope of your graph of acceleration vs. ramp slope + or - .05
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Analysis based on timing:
Based on the time down the ramp and the distance the ball traveled from rest as it accelerated down the ramp, what was the acceleration on each ramp, and what is the slope of the graph of acceleration vs. ramp slope?
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What do you think is the percent uncertainty in your measurement of the time required to travel down the ramp?
+ or - .05 or 5%
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For each ramp:
What was the change in the gravitational PE of the ball? You may assume a 70 gram mass.
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What velocity would have been attained if all the lost PE went into translational KE?
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12/12 around 5:40" ""
Self-critique (if necessary):
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Self-critique rating:
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You need to submit your data. You have reported changes in velocity, accelerations, and numbers of dominoes. However only the number of dominoes is data you actually observed. Everything else would have been inferred from the distance of the fall and the landing posiitons, which have not been reported.
All you need to do for now is insert a copy of your raw data, the things you actually observed, at the beginning, and resubmit.
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