Updated Procedure

1) Blu-tac was cut into 12 pieces measuring 0.5g

2) The Blue-tac was them moulded into squares measuring 1cm x 1cm x 0.2cm

3) 12 strands of string, each measuring 32cm was cut from the roll of string

4) The pieces of Blu-tac were then measured again and marked at their midpoint of 0.5cm

5) Each piece of string was stuck onto a slab of blu-tac, exactly in its middle.

6) the strands of string were then mesured again( now measuring 31cm each) and were marked at the 30cm spot

7) Strings were tied onto the weight holder, their knots resting at the marked spot of 30 cm. (Now, each piece of string measures exactly 30cm)

8) A weight of 50g was fitted onto the weight holder

9) The blu-tac (complete with the string and weight holder) was brought to the first venue of the experiment-the tile wall

10) Using the one metre ruler, we measured and positioned the Blu-tac one metre away from the ground

11) Using some wet tissue, we wiped the area around the one metre mark. Following that, we used some toilet paper to wipe it dry. Thus make it grease-free

12) Using as much as force as she could, Clarissa pushed the Blu-tac while Deborah started the stopwatch as soon as Clarissa started exerting force on the Blu-tac

13) This was done for ten seconds and soon as Clarissa stopped pressing the Blu-tac, Deborah, holding the two stopwatch, pressed the start button on the other stopwatch to calculate the time taken for the Blu-tac to drop.

14) The timing was then recorded

15) Step 9-13 were then repeated for the three other surfaces-the tile wall, lift door and the glass door

16) Process was repeated three times (three rounds)