Will moving closer to the fulcrum impact the balance of a see-saw?

  • Thread starter Thread starter bengaltiger14
  • Start date Start date
  • Tags Tags
    Homework
AI Thread Summary
Moving closer to the fulcrum on a see-saw affects balance due to changes in torque. When both an adult and a child move in 0.25m toward the fulcrum, the torque produced by the child increases. This increase in torque results in the child's end of the see-saw lowering. For balance to be maintained, the torques on both sides must be equal, and in this scenario, the child's end will drop. Thus, the movement toward the fulcrum does impact the balance of the see-saw.
bengaltiger14
Messages
135
Reaction score
0
Suppose that an adult and a child are balanced on a see-saw. Each person now moves in toward the fulcrum a distance of 0.25m. What effect will this have on the balance of the see-saw?

Would it even have an effect?? Or would the childs end go to the ground?
 
Physics news on Phys.org
The best way to answer this question is to imagine there are some numbers. In what relation do the torques produced by the adult and the child have to be for the see-saw to be balanced?
 
The torque has to be equal on both sides to balance the see saw.
 
After applying some numbers, I came to the conclusion that the torque that the child applying would increase, therefore, causing the childs end to lower.
 
bengaltiger14 said:
After applying some numbers, I came to the conclusion that the torque that the child applying would increase, therefore, causing the childs end to lower.

You got it right.
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
Thread 'Correct statement about a reservoir with an outlet pipe'
The answer to this question is statements (ii) and (iv) are correct. (i) This is FALSE because the speed of water in the tap is greater than speed at the water surface (ii) I don't even understand this statement. What does the "seal" part have to do with water flowing out? Won't the water still flow out through the tap until the tank is empty whether the reservoir is sealed or not? (iii) In my opinion, this statement would be correct. Increasing the gravitational potential energy of the...
Thread 'A bead-mass oscillatory system problem'
I can't figure out how to find the velocity of the particle at 37 degrees. Basically the bead moves with velocity towards right let's call it v1. The particle moves with some velocity v2. In frame of the bead, the particle is performing circular motion. So v of particle wrt bead would be perpendicular to the string. But how would I find the velocity of particle in ground frame? I tried using vectors to figure it out and the angle is coming out to be extremely long. One equation is by work...
Back
Top