Acceleration pratical

Describe experiment for constant mass with vary force

1)On desk we draw chalk lines at equal intervals e.g 10cm

2)Attach car with string and attach string to pulley with weights which is 100g

3)Let go of car and record the time that the car passed each distance marker on brake using stopwatch

4)Play back video and record time it takes for car to reach certain points with stopwatch if not possible with human eye

5)Repeat experiment but decrease amount of mass on end of string by 20g

6)Trasnfer the mass taken off the string onto the car to make sure mass stays constant at all times

What should be the result

The acceleration of car is proportional to the mass of the other end of string

As newtons law states that acceleration of an object is proportional to force

Force is the weight of mass at end of string

Experiment for constant force for change in mass

-Don’t add masses to the hook or force will change.

-Increase mass on toy car after every run

What should be the result from experiment

As we increases the mass of toy car the acceleration decreases

Newtons law says that acceleration is inversely proportional to mass of an object

If we don’t get a flat table