The discussion revolves around the relationship between velocity, radius, and force in a pulley system, focusing on how the configuration of pulleys affects the motion and forces involved.
Participants are actively engaging with each other's points, clarifying misunderstandings about the mechanics of the pulley system. Some guidance has been offered regarding the relationship between the number of strings and the forces involved, but no consensus has been reached on the exact calculations or interpretations.
The problem appears to lack a defined initial state and assumes a steady rate of pull, which may affect the interpretations of velocity and force in the discussion.
That's just the way the pulleys are strung. For every 3 units of motion of the string being wound by the motor, the lifted mass rises 1 unit.AN630078 said:
That's the velocity of the mass m, not the rate at which the reel is winding the string.
Oh ok thank you very much for your reply. I did not know that, so is it because there are three pulleys in this system to lift the mass by 1 unit. But for example if there were only two pulleys for the string to be wound around would the velocity be found by v=2u?Halc said:
It is not so much the number of pulleys but the number of strings between the pulleys. There are 3 strings pulling up on m, and the force needs to balance. So there is 980 N pulling down, so each string must be pulling up at 327N. The 333 answer seems to assume a round 10 m/sec gravitational acceleration.AN630078 said:
Oh ok I think I understand it far better now Thank you for your helpHalc said:
