Physics Lab Report (2)
-Sagar Batchu (11A)
Data collection and Processing:
Aim: To prove the parallelogram law of vector addition
Apparatus: A wooden board,2 pulleys, thumbtacks, meter rule, long piece of string, meter rule, white A4 size paper, fourteen 0.1 N weights, and three hooks each with a weight of 0.1 Newton.
Method:
- We first take the wooden board and place it vertically on a flat surface.
- We fix two pulleys at the top of the board and then hang the thread around the pulleys.
- We make two loops on either side of the string to hang the hooks.
- We make a list of the possible combinations of weights we can add on either side of the string.
- In the center between the two pulleys we place one hook with 6 weights two make a total of 0.7 N (including the weight of the hook).
- On either side of the string we hang the two remaining hooks.
- According to the choices made, weights are hanged on either of the hooks.
- After the weights come to rest a white sheet of paper is secured into place on the wooden block with the help of a tack.
- The block is kept in the light and markings are made where the shadow of the string falls and the position of the center hook.
- After this is done 5 times and readings are taken the parallelograms are completed and diagonals are drawn and measured. A suitable scale has to be taken. All these lengths are recorded.