Question

Using principle of moments, one can weigh any item using a single weighing stone. In one such experiment, a food packet was kept hanging at a distance of 15 cm to the left of a rod's center. It was countered by a 50 gm weighing stone, kept at a distance of 45cm to the right of the center. What's the weight of food packet?

Answer 1

Answer:

i hope by given solution you can understand

Answer 2

weight of a food packet is 150gm

Explanation:

• to find the weight of the food pakcet we must have to equalisethe torque on both ends.
• formula for torque is given as,

          Torque = f x ⊥ distasnce

• lets, find torue at the end of food packet,

           $torque = f$ × $distacne from$ $the center$

                      $= mg$× $l$  

                      $= m_{p}$×$10$×$15$  ---eqno:1    ( $m_{p} = mass of the food product$ )

• lets find at the other end,

            $torque = m_{S}$× $10$ × $45$  --eqno:2

• therefoe now equlise the both equations 1&2,

               $m_{P}$ x $g$ x $15 = 50$ x $g$ x $45$

                            $m_{p} = 150gm$