Science Protocol (Kee Chew,Jing Le,Yan Ji,Ranen)

The aim of the experiment:to find out the minimum amount of force (load)needed to overcome the inertia of the block.

Materials:

-Force meter

-pulley

-wooden board

-boxes with different surfaces

-weights(10g, 20g, 50g)

-weight hanger

-rope

Steps

1) Place a wooden board at the edge of the table.

2) Attach a pulley to the edge of the wooden board.

3) Hook one end of the rope to the wooden block and pull it through the pulley and let it hang.

4) At the other end of the rope, hang the weight hanger.

5) Continue placing 10g weights in succession at the weight hanger until the wooden block starts to move.

6) Count the mass of the weights.

7) Repeat step 5 and 6 twice more and calculate the average mass it takes for the block to move

8) Plot it into a table