The amusement park ride consists of a 200-kg car and passenger that are traveling at 3 m> s along a circular path having a radius of 8 m. if at t = 0, the cable oa is pulled in toward o at 0.5 m> s, determine the speed of the car when t = 4 s. also, determine the work done to pull in the cable.

Explanation:

given,

mass of the car = 200 Kg

speed = 3 m/s

radius of the circular path = 8 m

time t = 0

speed as O

Speed = 0.5 m/s

time = 4 s

work done = ?

initial angular velocity

radius at 4 second

now,

v₂ = 4 m/s

v' = 4.031 m/s

work done

i think it would be 80 km/h because 30 + 50 = 80 (sorry if this not the right answer i'm trying my best)