Starting at rest, a child applies a 63N force tangent to the edge of a merry-go-round through 31 2 rotations. At that moment, she stops and admires her spinning merry-go-round. Then she jumps onto the edge of the merry-go-round. The girl’s mass is 25kg, the merry-go-round’s moment of inertia is 70kg· m2, and the merrygo-round’s diameter is 2.0m. What is the final angular speed of the girl and merry-go-round?
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Starting at rest, a child applies a 63N force tangent to the
edge of a merry-go-round...
5. A 3.0 m diameter merry-go-round (mass 200 kg) is spinning at 10 rpm. A child...
5. A 3.0 m diameter merry-go-round (mass 200 kg) is spinning at 10 rpm. A child of 30.0 kg runs tangent to the merry-go-round at 2.0 m/s, in the opposite direction that it is turning, and jumps onto the outer edge. Calculate the merry-go-round's angular velocity, immediately after the child jumps on.
An 85.0 kg child runs in a straight line towards the edge of a stationary merry-go-round...
An 85.0 kg child runs in a straight line towards the edge of a stationary merry-go-round at 2.50 m/s. The merry-go-round is in the shape of a disk and has a diameter of 4.50 m and a mass of 235 kg. The child jumps onto and stays on the merry-go- round. What is the angular momentum of the child before this collision, in kg m2/s? (A) What is the moment of inertia of the merry-go-round, in kg m27 [B) What...
A 40.0-kg child running at 3.00 m/s suddenly jumps onto a stationary playground merry-go-round at a...
A 40.0-kg child running at 3.00 m/s suddenly jumps onto a stationary playground merry-go-round at a distance 1.50 m from the axis of rotation of the merry-go-round. The child is traveling tangential to the edge of the merry-go-round just before jumping on. The moment of inertia about its axis of rotation is 600 kg ? m2 and very little friction at its rotation axis. What is the angular speed of the merry-go-round just after the child has jumped onto it?...
Suppose a child gets off a rotating merry-go-round. Does the angular velocity of the merry-go-round increase,...
Suppose a child gets off a rotating merry-go-round. Does the angular velocity of the merry-go-round increase, decrease, or remain the same if: (a) He jumps off radially? (b) He jumps backward to land motionless? (c) He jumps straight up and hangs onto an overhead tree branch? (d) He jumps off forward, tangential to the edge? Explain your answers. (Refer to the figure below)
A brave child decides to grab onto an already spinning merry-go-round. The child is initially at...
A brave child decides to grab onto an already spinning merry-go-round. The child is initially at rest and has a mass of 33.5 kg. The child grabs and clings to a bar that is 1.20 m from the center of the merry-go-round, causing the angular velocity of the merry-go-round to abruptly drop from 47.0 rpm to 17.0 rpm. What is the moment of inertia of the merry-go-round with respect to its central axis? moment of inertia: kg. m²
tion 9 of 12 > A brave child decides to grab onto an already spinning merry-go-round....
tion 9 of 12 > A brave child decides to grab onto an already spinning merry-go-round. The child is initially at rest and has a mass of 25.5 kg. The child grabs and clings to a bar that is 1.45 m from the center of the merry-go-round, causing the angular velocity of the merry-go-round to abruptly drop from 37.0 rpm to 17.0 rpm. What is the moment of inertia of the merry-go-round with respect to its central axis? moment of...
A merry-go-round is a common piece of playground equipment. A 2.8-m-diameter merry-go-round with a mass of...
A merry-go-round is a common piece of playground equipment. A 2.8-m-diameter merry-go-round with a mass of 260 kg is spinning at 22 rpm. John runs tangent to 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 39 kg. What is the merry-go-round's angular velocity, in rpm, after John jumps on?
(4) A playground ride, known as merry-go-round, consists of a disk with a mass of 40.0...
(4) A playground ride, known as merry-go-round, consists of a disk with a mass of 40.0 kg and a radius of 1.80 m mounted on a frictionless axle. The frictionless axle is a vertical cylinder of radius kg, and has the same rotational axis as the disk. A child with a mass of 3.50 m/s on a line tangential to the outer rim of the disk and jumps onto the outer edge of the ride while it is at rest...
A merry-go-round with moment of inertia 400 kg-m^2 and radius 2.0m is rotating with angular speed...
A merry-go-round with moment of inertia 400 kg-m^2 and radius 2.0m is rotating with angular speed 0.50 rad/s in the clockwise direction about a fixed axis. A child of mass 40 kg runs tangentially to the merry-go-round with speed 3.0m/s and grabs onto the outside edge of the merry-go-round. a. What is the final angular velocity of the system (merry-go-round plus child)/ What is the final tangential speed of the child? b. What is the change in kinetic energy? c....
A child sits at the outer edge of a merry-go-round (MGR) at a neighborhood park. The...
A child sits at the outer edge of a merry-go-round (MGR) at a neighborhood park. The MGR has a radius of R = 1.5m and a rotational inertia of IMGR = 140kgm2. The child has a mass of 40kg and contributes some to the rotational inertia of the spinning system: I = IMGR + IChild. The MGR is spinning with an angular speed of 2.0s−1 when the child begins dragging her foot on the ground to bring the MGR to...
5. A 3.0 m diameter merry-go-round (mass 200 kg) is spinning at 10 rpm. A child of 30.0 kg runs tangent to the merry-go-round at 2.0 m/s, in the opposite direction that it is turning, and jumps onto the outer edge. Calculate the merry-go-round's angular velocity, immediately after the child jumps on.
An 85.0 kg child runs in a straight line towards the edge of a stationary merry-go-round at 2.50 m/s. The merry-go-round is in the shape of a disk and has a diameter of 4.50 m and a mass of 235 kg. The child jumps onto and stays on the merry-go- round. What is the angular momentum of the child before this collision, in kg m2/s? (A) What is the moment of inertia of the merry-go-round, in kg m27 [B) What...
Suppose a child gets off a rotating merry-go-round. Does the angular velocity of the merry-go-round increase, decrease, or remain the same if: (a) He jumps off radially? (b) He jumps backward to land motionless? (c) He jumps straight up and hangs onto an overhead tree branch? (d) He jumps off forward, tangential to the edge? Explain your answers. (Refer to the figure below)
A brave child decides to grab onto an already spinning merry-go-round. The child is initially at rest and has a mass of 33.5 kg. The child grabs and clings to a bar that is 1.20 m from the center of the merry-go-round, causing the angular velocity of the merry-go-round to abruptly drop from 47.0 rpm to 17.0 rpm. What is the moment of inertia of the merry-go-round with respect to its central axis? moment of inertia: kg. m²
tion 9 of 12 > A brave child decides to grab onto an already spinning merry-go-round. The child is initially at rest and has a mass of 25.5 kg. The child grabs and clings to a bar that is 1.45 m from the center of the merry-go-round, causing the angular velocity of the merry-go-round to abruptly drop from 37.0 rpm to 17.0 rpm. What is the moment of inertia of the merry-go-round with respect to its central axis? moment of...
(4) A playground ride, known as merry-go-round, consists of a disk with a mass of 40.0 kg and a radius of 1.80 m mounted on a frictionless axle. The frictionless axle is a vertical cylinder of radius kg, and has the same rotational axis as the disk. A child with a mass of 3.50 m/s on a line tangential to the outer rim of the disk and jumps onto the outer edge of the ride while it is at rest...
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