Scenario+2

Donna's Pendulum Experiment

Donna has observed that her father can control the speed of their grandfather __cloc__ __k__ by __adjusting the height__ of the __weight__ on the end of the pendulum. Donna thinks that the __pendulum will move faster__ when the __weight is lowered,__ and wants to test her idea. // Donna gets a __stopwatch__ and __measures__ the __time it takes__ for the pendulum to __swing twenty times__ when the __weight__ is __moved__ to its __lowest position__ // __.__ Donna begins to __move the weight up by 1 cm__ and __continues__ to __measure__ the __time__ for __twenty swings__ of the pendulum. Donna records her data:
 * Position ||= Time (seconds) ||
 * = 1 cm ||= 23.23 ||
 * = 2 cm ||= 21.56 ||
 * = 3 cm ||= 20.33 ||
 * = 4 cm ||= 19.00 ||
 * = 5 cm ||= 18.02 ||

Complete each of the following:
 * 1) Identify Donna's hypothesis:Do es the pendulum move faster when it's in the lowest postion or the highest position.
 * 2) Identify the independent variable: The position or height.
 * 3) Identify the dependent variable: The times.
 * 4) Identify the other variables Donna needs to consider/control during this experiment: The same clock, also you would might need to move the weight up by 1cm., need the stop watch. Set the clcok at the highest position.
 * 5) Identify the control group in this experiment: The highest position.
 * 6) Identify the experimental group(s): The heights and the weight with the time.
 * 7) What conclusions might Donna draw from this data? The data shows that the lower the weight the faster the speed goes.
 * 8) What recommendations might you suggest for further study or for improvement? Use different clocks, use a different weight and move a diffferent cm.Yes the hypotesis is wright.