The problem involves an 80 kg man lowering himself using a massless cable over pulleys, with a downward acceleration of 0.2 m/s². The objective is to determine the force exerted by the man on the cable, considering the effects of gravity.
Participants are exploring the implications of including gravitational force in the calculations. One participant has provided a calculation involving tension in the cable, suggesting a more complex interaction due to the pulleys. There is no explicit consensus on the correct approach yet, but guidance regarding the importance of gravity has been offered.
The original poster acknowledges missing information, specifically a diagram that is crucial for understanding the setup. There is also a mention of potential limitations regarding the use of HTML for images in the forum.
Slayergnome said:I am and idot, thanks for the gravity tip also ther is a diagram I did not provide taht is very important, just out of curiosity do you put pictures on here using HTML type.
Calculation is
-980 + 3t=100kg*.2
3t=-20+980
t=320 N
The reason it is 3t is because the diagram shows the rope connecting the celling and the platform/man 3 times with the two pullys)