Question

David an his father sat at the end of a seesaw from the pivot. The weight of David and his dad is 400N and 700N respectively. Where should David's mother sit in order to balance the seesaw. The weight of David's mother is 600N.

Answer 1

To balance a seesaw using torques, the sum of torques around the pivot must be equal to zero, so David's mother must sit at a position that creates a torque opposite and equal to David and his father's torque.

Step-by-step explanation:

To determine where David's mother should sit to balance the seesaw, we need to apply the concept of torques in equilibrium. The condition for equilibrium is that the sum of torques around the pivot must be zero. Given that David and his father have a combined weight of 1100N (400N + 700N) and sit at the end of the seesaw, their torque around the pivot can be represented by their combined weight times their distance from the pivot. David's mother needs to sit on the opposite side of the seesaw with a distance such that the torque created by her weight of 600N balances out the torque from David and his father. Without the specific distances of David and his father from the pivot, we cannot calculate the exact position for David's mother.