please show all work

9) Sam and George are standing on two beams 6.00 meters apart on a job site. They need to lift their crate of tools midway between them with ropes up 8.0 meters to where they will work. a) What is the angle between the ropes when the crate is on the ground? b) How much force do Sam and George need to exert on the ropes when lifting the 17.0 N box off the ground? (10 points) ) How much work with they have done when the crate has been lifted half way up? 10) What is the centripetal force on an 800.0-kg vehicle rounding a curve of radius 45.00 m at 100.0 km/h