Analysing a pulley block system

AI Thread Summary
The discussion focuses on analyzing a pulley block system involving two identical blocks connected by a weightless, inextensible thread over a pulley. One block is on a table, while the other hangs off the edge, creating a taut thread when released. Participants are encouraged to derive the equations of motion for both blocks based on the forces acting on them. The initial request emphasizes the need for clarity despite the absence of a diagram. The analysis aims to fully understand the dynamics of the system.
Boltzmann2012
Messages
30
Reaction score
0
A pulley is mounted at the edge of a table.
A block is connected to an identical block through the pulley(assumed to be weightless)by a weightless in-extensible thread of length 2l. The left block rests on the table at a distance l from the edge (where the pulley is mounted) while the right block is kept at the same level(not on the table, outside) so that the thread is just taut and does not sag, and then released.

Can we analyze this system completely,that is, write the equations of motion for both the blocks
As a function of a specific variable. Any help is appreciated.the extensive description was due to the unavailability of the diagram.

Regards,
Boltzmann2012
 
Physics news on Phys.org
Start by writing down the forces on each block.
 
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations'
Figure 1 Overall Structure Diagram Figure 2: Top view of the piston when it is cylindrical A circular opening is created at a height of 5 meters above the water surface. Inside this opening is a sleeve-type piston with a cross-sectional area of 1 square meter. The piston is pulled to the right at a constant speed. The pulling force is(Figure 2): F = ρshg = 1000 × 1 × 5 × 10 = 50,000 N. Figure 3: Modifying the structure to incorporate a fixed internal piston When I modify the piston...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top