A child sitting 1.90 m from the center of a merry-go-round moves with a speed of 2.05 m/s . Calculate the centripetal acceleration of the child. Calculate the net horizontal force exerted on the child. (mass = 28.5 kg ).

Acceleration = 2.21m/s^2

Force = 62.99N

Explanation:

Centripetal acceleration = v^2 / r

Given velocity v = 2.05m/s

Radius r = 1.90m

Centripetal acceleration = (2.05)^2 /1.90

2.05 x 2.05 /1.90

4.2025/1.90

2.21m/s^2

Now , since a = 2.21 m/s^2

And mass m = 28.5kg

Force exerted on the child = mass x centripetal acceleration

That’s 28.5kg x 2.21m/s^2

62.99N

this is poiselle's equation from fluid mechanic in physics. mech eng

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.