A 24.5-kg child is standing on the outer edge of a horizontal merry-go-round that has a moment of inertia of about a vertical axis through its center and a radius of 2.40 m
The entire system (including the child) is initially rotating at 0.180 rev/s. Find the angular velocity if the child moves to a new position 1.10 m from the center of the merry-go-round.
0.200 rev/s
You might also like to view...
Ptolemy's Cosmos..
a) was geocentric with planets moving in epicycles along deferents and was the culmination of early Greek philosophy b) was the first record of an heliocentric cosmos c) was geocentric with planets exhibiting only prograde d) flat with water surrounding ut like a moat
An object is attached to a hanging unstretched ideal and massless spring and slowly lowered to its equilibrium position, a distance of 6.4 cm below the starting point
If instead of having been lowered slowly the object was dropped from rest, how far then would it then stretch the spring at maximum elongation? A) 13 cm B) 9.1 cm C) 6.4 cm D) 18 cm E) 26 cm
Niobium metal becomes a superconductor (with electrical resistance equal to zero) when cooled below 9 K. If superconductivity is destroyed when the surface magnetic field exceeds 0.100 T, determine the maximum current a 2.00-mm diameter niobium wire can carry and remain superconducting. (µ0 = 4p × 10^-7 T×m/A)
a. 2000 A c. 125 A b. 1000 A d. 500 A
Does the Moon orbit the Sun?
A. Yes. It goes in a circle about the Sun. B. No. It orbits Earth. C. Yes, but it also orbits Earth. D. No, but it would if Earth were not present.