In this experiment you will examine the recoil energy of a hoop cart as it strikes a barrier that has an ever-decreasing mass. You will need the following supplies:
• 1 eight-foot board
• 2 wooden blocks
• 6500 grams of slotted masses
• 1 meter stick
• 1 hoop cart
• 30 cm of masking tape
• 1 triple beam balance
In each trial you will release the hoop cart from a state of rest from the top of the incline plane and allow it to roll down the incline and strike the stationary wooden blocks that are positioned along the designed line. Preliminary Data Before you begin your trials, you must measure and record the following preliminary data: |
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Experimental Data
Record the following information for each trial:
• the barrier's mass
• the rebound distance along the incline of the hoop cart
• the displacement of both edges of the wood blocks after the collision
You can use masking tape to mark the cart's rebound distance for each trial. Remember to return the cart to the same initial release position as well as the barrier to its designated impact position before beginning the next trial. It is also recommended that the slotted masses be placed symmetrically on the wooden blocks to insure the best possible collision results.
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wooden barrier
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cart rebound |
added mass |
left edge |
right edge |
av distance |
distance |
(g) |
(cm) |
(cm) |
(cm) |
(cm) |
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Analysis
When you have completed your trials, open the EXCEL sheet titled 1-HoopCart.xls and fill in the cells that are highlighted in light green. Do NOT touch the cells that are highlighted in light yellow since they are pre-programmed to assist you in the analysis of your data. Save your file to your period folder as LastnameLastnameHoopCart.xls. Be careful that your data is in the requested unit of measure.
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Refer to the following information for the next three questions.
Using your knowledge gained from this experiment, answer the following problem.
A golf ball is hurled at, and bounces from, a very massive bowling ball that is initially at rest.
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When you have completed this lab, make sure that you submit your results online as well as turn in your calculations/data and a copy of your EXCEL graph. Names are important!