Question

14. A uniform metre scale of mass 50 g is balanced on the edge of a knife at mark 60 cm by suspending an unknown mass at the 80 cm mark. Find the value of the unknown mass.​

Answer 1

Answer:

The centre of gravity of a meter scale will be acting at the mid point (50 cm) of the scale.

For the balance, the moment of forces on both sides of knife edge will be equal.

So, mg×(55−50)=25g×(100−55) or m=225gram

Answer 2

Answer:

see the attachment hope it will help you