In a stage production of Peter Pan, the 45 kg actress playing Peter has to fly i
ID: 2193478 • Letter: I
Question
In a stage production of Peter Pan, the 45 kg actress playing Peter has to fly in vertically, and to be in time with the music, she must be lowered, starting from rest, a distance of 4.5 m in 2 s. Backstage, a smooth surface sloped at 56 degree supports a counterweight of mass m.
a) What is the mass of the counterweight that
must be used? The pulley is of negligible mass
and is frictionless. The acceleration of gravity
is 9.81 m/s2 .
Answer in units of kg.
b)What is the tension in the wire?
Answer in units of N
Explanation / Answer
1) 34.83 kg 2) the tension is T= 340.2 N