Recent content by passphysicsC

well the first tension is positive since it is holding the chair and man up. the weight (w) is negative since it the force working against the tension. I believe the last tension would be negative since it is caused by the man pulling on the rope to pull himself and the chair up.

sorry, for some reason when I posted it, none of the letter remained capitalized

Σf = (t + w) + (t)

alright, so then the Net Tension = ((mass x acceleration) + weight) + (mass x acceleration)?

ohhhh okayyy then two ropes, one rope connected to the chair, and one rope which the man uses to pull himself and the chair up...would there be two different tensions then?

well in the positive y-direction (up) there is tension and in the negative y- direction there is weight and the force which is caused by the man pulling on the rope in order to life himself up. so would it be the same free body diagram, but with a negative force added to the bottom?

oh sorry for not being more specific :(. the pulley is frictionless, and the man is pulling himself and the chair up via the rope (connected to the chair) that goes through the pulley connected to the ceiling and then falls back down again, allowing the man to grab it and pull himself and the...

this is what I drew as a Free Body Diagram with the information given: Tension | | | person/chair...

Homework Statement A man is strapped to a chair which is connected to a pulley (combined weight of chair and person = 95 kilograms). With what magnitude must the man pull on the rope if he is to rise a) with a constant velocity b) with an upwards velocity of 1.3 meters per seconds...