How to determine the required hanging mass for specified loading.,

Countermass was weighed thrice to get a more accurate average value

Rightfully, the mass of countermass should not change. However, to ensure more accurate load calculations, it is advised to go through this step once at the start of every experimental semester

1st attempt: 3.567kg

2nd attempt: 3.569kg

3rd attempt: 3.572kg

Hence, averaged mass of countermass = 3.569kg

Mass below 600 grams can be weighed at E3-04-02

Mass above 500 grams needs to be weighed at Applied Mechanics lab, EA level 2

Weigh rod of slotted mass

Weigh slotted mass

Slotted mass: Add up both masses in terms kg

Open excel document 'Lever calculations'

Weigh the total countermass used and input into excel unit B11 as marked out. e.g. Here it is stated as 41.202N = 4.2kg

Upon input of countermass (N), the 'Normal Load vs Hanging Mass" graph will display an equation as shown

The gradient value corresponds to value 'a'

The coefficient marked out in green corresponds to value 'c'

Go to Computer -> (C:) -> Windows -> Tribometer_data -> Tribometer_cal-load-params

Input 'a' and 'c' values as generated from excel file 'Lever_calculations"