Whos a physics genius? Two questions regarding Work/Energy

[-=¤willhaven¤=-]

Re: Whos a physics genius? Two questions regarding Work/Energy

Originally posted by vaxopy
A swing is made from a rope that will tolerate a maximum tension of without breaking. Initially, the swing hangs vertically. The swing is then pulled back at an angle of 60.0° with respect to the vertical and released from rest. What is the mass of the heaviest person who can ride the swing?

depends on the maximum tension of the rope

[legacy-vaxopy]

A swing is made from a rope that will tolerate a maximum tension of 800N without breaking. Initially, the swing hangs vertically. The swing is then pulled back at an angle of 60.0° with respect to the vertical and released from rest. What is the mass of the heaviest person who can ride the swing?

In 2.0 minutes, a ski lift raises four skiers at constant speed to a height of 140 m. The average mass of each skier is 65 kg. What is the average power provided by the tension in the cable pulling the lift?