tension in elevator cable

The figure shows a technique called rappelling, used by mountaineers for descending vertical rock faces. The climber sits in a rope seat, and the rope slides through a friction device attached to the seat. Suppose that the rock is perfectly smooth (i.e., there is no friction) and that the climber's...

Given:Jill of the Jungle swings on a vine 6.0 m long. What is the tension in the vine if Jill, whose mass is 57 kg, is moving at 2.8 m/s when the vine is vertical? I believe I am going about this the wrong way. Any Guidance would be awesome.

Whenever I go through extreme times of mental and emotional stress I get Horrible dizzy spells that can last anywhere from 10sec-20minutes Pressure headaches, it feels like someone is blowing a ballon in my face Tenderness, my whole body is sore like I'm bruised I'm either too warm or too...

:) How much tension must a rope withstand if it is used to accelerate a 1046 kg car horizontally along a frictionless surface at 1.21 m/s2?

A 38.6 kg sign is suspended by two wires, as the drawing shows. Find the tension in wire 1 and in wire 2. http://www.webassign.net/v4cgijbuck@collinshill.ga/student.pl?d=20061017232149jbuck@collinshill.ga24196236107