1. Procedure I.1 The mass of the puck is ...
2. Procedure I.3 The mass of the hanger is...
3. The data for calculating acceleration will be from the following video of a simulation. framborder="0">Measurement The height from which the hanging mass was dropped is about...
4. Using the stop watch of your phone (or your watch), measure the time taken for the hanging mass to fall the ground. The time taken for the hanging mass to fall to the ground is about ...
5. Since the initial speed is zero, the acceleration (a ) can be a expressed in terms of the height (h ) and time taken to fall ( t ) as a = 2 h / t2 Calculate the acceleration.
6. Since the initial speed is zero, the speed just before it hits the ground (. v2) can be calculated from v2 = a t Calculate its speed just before it hits the ground.
7. Initially both objects are at rest. So the initial mechanical energy is the potential energy of both objects. MEi = ( m1 + m2 ) 9.8 h Calculate the initial mechanical energy.
8. Final mechanical energy just before the hanging object hits the ground is the sum of the potential potential energy of the sliding object and the kinetic energy of both objects. MEf = m1 9.8 h + (m1 + m2) v f 2 / 2 Calculate the final mechanical energy ME
9. Calculate the ratio of final mechanical energy to initial mechanical energy.
10. (Skip Procedure I.13 & I.14) Procedure I.15 The ratio of final to initial mechanical energy is expected to be one because mechanical energy is conserved for gravitational force. The percentage error between the experimental ratio and the expected value of one is.