Bucket+of+Water

Names: Julia Estus Joanna Redlinska



__**Title:**__ Forces On Your Hand

__**Lab Goal/ Question:**__ Is there more force acted upon your hand when using the mini pvc pipe attached to a rope or is there a greater force acted upon your hand with out the rope?

__**Materials:**__ 1. Bucket 2. Rope 3. Scale 4. Camera 5. Tube 6. Different size balls (Tennis, golf, styrofoam)

__**Procedure:**__ 1. First, tie the rope to the handle of the bucket 2. Take the loose end of the rope, and place the mini pvc pipe through the hole. Slide the tube halfway down the rope. 3. Tie a loop or knot at the end of the rope 4. Hook the scale to the loop of the rope (make sure the scale is starting at 0 Newtons) 5. Get ready to videotape the experiment 6. Have your partner hold the end of the scale, while you spin the bucket (while holding the mini pvc pipe) 7. Keep your arm in a stationary position when rotating the bucket 8. Record the Newtons of force the scale reads with the tube in place 9. Repeat steps the same steps without the pvc pipe, just rotate the bucket with your hand holding the rope ( try not keep your hand in one specific place so the data is consistent) 10. Weigh the 3 chosen balls (grams). Repeat the steps 4,6,7,8,&9 with different balls inside the bucket ( tennis ball, gold ball, foam ball) 11. Collect and compare the data (write out which the rope/ pipe exerts a greater force on your hand)

__**Data:**__ __**[|Bucket!!!]**__ Fup= when the bucket is at the top of the rotation
 * Fbottom= when the bucket is at the bottom of the rotation
 * || Pipe || Hand ||
 * Bottom || 9N || 14N ||
 * Up || 4N || 7.5N ||


 * // Mass Tennis Ball= 57g //**
 * || Pipe || Hand ||
 * Bottom || 5N || 7N ||
 * Up || 3N || 4N ||


 * // Mass Golf Ball= 45g //**
 * || Pipe || Hand ||
 * Bottom || 3N || 7.5N ||
 * Up || 2N || 4.5N ||
 * // Mass Foam Ball= 27g //**

__**Reflection/ Conclusion:**__

According to our data, we have concluded that there is more force applied on your hand when the pvc pipe is not attached to the rope.

In the first experiment with the tennis ball, when the bucket reached the bottom of the rotation, the hand with the pipe scaled out to be 9 Newtons,while the hand by itself scaled out to be 14 Newtons. This concluded that the force on the hand was stronger than the force on the pipe.

In the next experiment, we tested a golf ball in the bucket. Towards the bottom of the rotation, the golf ball bounced off the sides of the bucket, which alluded the data. But we can still summarize the data with our calculations. The force on the pvc pipe was 5 Newtons, when the force on the hand itself was 7 Newtons. Even though the data is really close together, the difference is still visible and noticeable.

The last set of data we took was with a foam ball in the bucket. We tested it twice because the data in the first trail with the pipe was way to close to the trial with the hand itself.The cause of this may have been because of the foam ball, it was the lightest out of all the balls and the data may have been skewed.In the trial that we decided to share the pvc pipe with the hand was 3 Newtons while the hand itself was 7.5 Newtons at the bottom of the rotation.

In conclusion, it is accurate to say, following our data analysis above that there is more force applied on your hand when the pvc pipe is not attached to the rope.The force is not directly acted upon by your hand so there is less strain on it.

= GO PHYSICS !! =