Lab #3 – Calculating Work

Work = Force x distance

Work = (Force)(Distance)

W = Fd

Problem

How can a ramp help us pull a heavy object up to a greater height?

Hypothesis

Materials

Ruler, chair, ramp (inclined plane), weights, spring scale, various metallic objects

Procedure

  

Results

Work done without ramp

Object	Force (Newtons)	Distance (cm)	Work (Joules)
50 g Weight
100 g Weight
200 g Weight
500 g Weight
Chemistry Tongs
Metal Object

 Work done with ramp

Object	Force (Newtons)	Distance (cm)	Work (Joules)
50 g Weight
100 g Weight
200 g Weight
500 g Weight
Chemistry Tongs
Metal Object

Work done with Plastic Map and ramp

Object	Force (Newtons)	Distance (cm)	Work (Joules)
50 g Weight
100 g Weight
200 g Weight
500 g Weight
Chemistry Tongs
Metal Object

Work done with Paper Towels and ramp

Object	Force (Newtons)	Distance (cm)	Work (Joules)
50 g Weight
100 g Weight
200 g Weight
500 g Weight
Chemistry Tongs
Metal Object

ANALYSIS

1)     How did the weight (force pulling down) affect the amount of work done on the object?

2)     How did the distance affect the amount of work done on the object?

3)     Compare/Contrast the trial with the least amount of work to that with the most amount of work.

4)     What is your Independent Variable?

5)     What is your Dependent Variable?

6)     What are your Constants?

Friction Lab Analysis Questions
1)  What is your Independent Variable?
2)     What is your Dependent Variable?
3)     What are your Constants?
4) Which surface had more friction?  Use your Data from the table to prove this. 
 

Conclusion

What was your problem?

Restate your hypothesis.  Was it right? wrong?  why or why not?

What did you learn in this lab?

What did you like about this lab?

What were some challenges you had to deal with?

What could you do next with this problem?  What other tests could you perform?

Write down any other additional thoughts, observations, inferences, etc.