Required Practical Activity 7 - 2nd Experiment

Question 1

Apparatus for investigating how varying the mass of an object affects the acceleration produced by a constant force:

Answer 1

• toy car attached to piece of string
• string is looped around a pulley
• other end of the string is attached to a 100g mass
• timer
• chalk

Question 2

Method for investigating how varying the mass of an object affects the acceleration produced by a constant force:

Answer 2

1. Set up apparatus as shown in the diagram.
2. Keep the force constant by only using. 100g mass at the end of the string.
3. Attach a mass to the toy car.
4. Repeat the experiment but increase the mass attached to the toy car in the same increments.

Question 3

Conclusion for investigating how varying the mass of an object affects the acceleration produced by a constant force:

Answer 3

• Newton’s second law tells us that the acceleration of an object is inversely proportional to the mass of the object
• So as the mass of the toy car is increased the acceleration decreases