Question

Case-1: Place 5 kg fire extinguisher at 2 m mark to the left of the pivot. Where should you place the 10 kg trash can to balance the board? Show your calculations. 2 Nas Consider this situation without using the simulation: Predict what will happen when the supports are removed and explain your reasoning. Predict what will happen if the 80 kg adult was further from the pivot (more right) and explain your reasoning Predict what will happen if the 30 kg child was closer to the pivot (more right) and explain your reasoning Test your predictions in the Balance Lab. Make notes about any ideas you have that need to be changed. What are some rules you could use to make predictions for other situations where masses are on a balance? Test your rules with some situations in the lab. Make corrections if needed, then show evidence that your rules work.

Answer 1

Care 1 To balance the board the het toique about the Pivot should be zero. 5x9.8 x 22 10x 9.8 x 2 & alm. place loky at I'm mark to the right of Pivot, the board will be balanced. Care 2 80x9.8 x 3 z 2352 Nomi 2352 No. aha the 30 ky child was (1) clockwire Toque Anti-lockwise Taque = 30x9.8 x 8 = clock wire Taque a Anticlockwire tolque. ie, net torque about pivot is zew. So the board will be balanced. closer to the pust, clockwise toque will be than anticlockwire greater torque and here, the board will estate in the Clockwire direction. (1) If the 80 kg adult was farther from the pust, the clock wire torque will be greater torque and hence, the board will wtate in the clockwire direction. than anticlockwise