Question

A disk-shaped merry-go-round of radius 2.13 m and mass 185 kg rotates freely with an angular speed of 0.631 rev/s . A 58.4 kg person running tangential to the rim of the merry-go-round at 3.11 m/s jumps onto its rim and holds on. Before jumping on the merry-go-round, the person was moving in the same direction as the merry-go-round's rim.

Part A What is the final angular speed of the merry-go-round?

Answer #1

A disk-shaped merry-go-round of radius 2.93 m and mass 185 kg
rotates freely with an angular speed of 0.621 rev/s . A 60.4 kg
person running tangential to the rim of the merry-go-round at 3.51
m/s jumps onto its rim and holds on. Before jumping on the
merry-go-round, the person was moving in the same direction as the
merry-go-round's rim.
What is the final angular speed of the merry-go-round?

A disk-shaped merry-go-round of radius 2.63 m and mass 155 kg
rotates freely with an angular speed of 0.558 rev/s. A 59.4 kg
person running tangential to the rim of the merry-go-round at 3.58
m/s jumps onto its rim and holds on. Before jumping on the
merry-go-round, the person was moving in the same direction as the
merry-go-round's rim. (a) Does the kinetic energy of the system
increase, decrease, or stay the same when the person jumps on the
merry-go-round?...

IP A disk-shaped merry-go-round of radius 2.84 m and mass 155 kg
rotates freely with an angular speed of 0.62 rev/s . A 61.1 kg
person running tangential to the rim of the merry-go-round at 3.17
m/s jumps onto its rim and holds on. Before jumping on the
merry-go-round, the person was moving in the same direction as the
merry-go-round's rim.
Part B Calculate the initial kinetic energy for this system.
Part C Calculate the final kinetic energy for this...

A child exerts a tangential 58.5 N force on the rim of a
disk-shaped merry-go-round with a radius of 2.99 m.
If the merry-go-round starts at rest and acquires an angular speed
of 0.1250 rev/s in 5.00 s, what is its mass?

A 2.8-m -diameter merry-go-round with a mass of 230 kg is
spinning at 20 rpm . John runs around the merry-go-round at 5.0 m/s
, in the same direction that it is turning, and jumps onto the
outer edge. John’s mass is 35 kg . What is the merry-go-round's
angular speed, in rpm, after John jumps on?

Merry Go
Round
A merry-go-round
with a radius of R = 1.80 m and moment of inertia I
= 201
kg-m2
spinning with an
initial angular speed of ω = 1.5 rad/s in the counter clockwise
direction when viewed from above. A person with mass m =
55
kg and velocity v
= 4.5
m/s runs on a path
tangent to the merry-go-round. Once at the merry-go-round the
person jumps on and holds on to the rim of the
merry-go-round....

A 2-m-diameter merry-go-round with a mass of 250 kg is spinning
at 20 rpm. John runs around the merry-go-round at5.0 m/s, in the
same direction that it is turning, and jumps onto the outer edge.
John’s mass is 31 kg .
Part A
What is the merry-go-round's angular speed, in rpm, after John
jumps on?

A 170-kg merry-go-round in the shape of a uniform, solid,
horizontal disk of radius 1.50 m is set in motion by wrapping a
rope about the rim of the disk and pulling on the rope. What
constant force would have to be exerted on the rope to bring the
merry-go-round from rest to an angular speed of 0.600 rev/s in 2.00
s? (State the magnitude of the force.)

A merry-go-round with a a radius of R = 1.75 m and moment of
inertia I = 182 kg-m2 is spinning with an initial
angular speed of ω = 1.4 rad/s in the counter clockwise direection
when viewed from above. A person with mass m = 71 kg and velocity v
= 4.4 m/s runs on a path tangent to the merry-go-round. Once at the
merry-go-round the person jumps on and holds on to the rim of the
merry-go-round.
1)What...

A merry-go-round with a a radius of R = 1.84 m and moment of
inertia I = 206 kg-m2 is spinning with an initial
angular speed of ? = 1.54 rad/s in the counter clockwise direection
when viewed from above. A person with mass m = 66 kg and velocity v
= 4.5 m/s runs on a path tangent to the merry-go-round. Once at the
merry-go-round the person jumps on and holds on to the rim of the
merry-go-round.
1)...

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