In a broadway performance, an 73.3-kg actor swings from a 4.50-m-long cable that is horizontal when he starts. at the bottom of his arc, he picks up his 55.0-kg costar in an inelastic collision. what maximum height do they reach after their upward swing?

Answer

given,

mass of actor = 73.3 Kg

length of the cable = 4.5 m

mass of his costar = 55 Kg

maximum height they can reach =?

velocity  just before colliding with costar

    ss

Using momentum conservation

momentum before collision = momentum after collision

maximum height achieved

using energy conservation

h =1.465 m

not too sure thinking it will always be directed towards the centre of the earth. could be wrong not sure