Consider a spinning CD which has a mass of 15.0 g. If the radius of the...
Consider a spinning CD which has a mass of 15.0 g. If the radius of the CD is 7.9 cm, and if it rotates about its centre at an angular frequency of 50.3 rad/s, what is its rotational kinetic energy (in J)? Assume the CD is a solid disk (i.e. ignore the hole in the center.).
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Consider a spinning CD which has a mass of 15.0 g. If the radius
of the...
A disk with radius 0.6 meters and mass 31 kg is spinning about its own center with an angular velocity of 88ed A solid sphere (/ mR2) with a radius of 0.18 meters which is spinning with an angula...
A disk with radius 0.6 meters and mass 31 kg is spinning about its own center with an angular velocity of 88ed A solid sphere (/ mR2) with a radius of 0.18 meters which is spinning with an angular velocity of -18 ed (the negative sign indicates the opposite 6. rad sec direction), is gently lowered onto the disk a sticks to the disk. The two rotate together (about their mutual center of mass) at an angular velocity of 33...
A baseball (mass 0.14 kg, radius 3.7 cm) s spinning with an angular velocity of 48...
A baseball (mass 0.14 kg, radius 3.7 cm) s spinning with an angular velocity of 48 rad/s. What Is its rotational kinetic energy?
A CD has a mass of 17 g and a radius of 6.0 cm. When inserted...
A CD has a mass of 17 g and a radius of 6.0 cm. When inserted into a player, the CD starts from rest and accelerates to an angular velocity of 28 rad/s in 0.31 s. Assuming the CD is a uniform solid disk, determine the net torque acting on it.
A CD has a mass of 17 g and a radius of 6.0 cm. When inserted...
A CD has a mass of 17 g and a radius of 6.0 cm. When inserted into a player, the CD starts from rest and accelerates to an angular velocity of 28 rad/s in 0.47 s. Assuming the CD is a uniform solid disk, determine the net torque acting on it.
A person with mass mp = 74 kg stands on a spinning platform disk with a...
A person with mass mp = 74 kg stands on a spinning
platform disk with a radius of R = 2.37 m and mass md =
184 kg. The disk is initially spinning at ? = 1.9 rad/s. The person
then walks 2/3 of the way toward the center of the disk (ending
0.79 m from the center).
1) What is the total moment of inertia of the system about the
center of the disk when the person stands...
A person with mass mp = 79 kg stands on a spinning platform disk with a...
A person with mass mp = 79 kg stands on a spinning platform disk with a radius of R = 1.86 m and mass md = 183 kg. The disk is initially spinning at ω = 1.8 rad/s. The person then walks 2/3 of the way toward the center of the disk (ending 0.62 m from the center). 1) What is the total moment of inertia of the system about the center of the disk when the person stands on...
1. A solid cylinder has a mass of 5 kg and a radius of 30 cm. A torque of 40 Nm is applied to the cylinder. What will be...
1. A solid cylinder has a mass of 5 kg and a radius of 30 cm. A torque of 40 Nm is applied to the cylinder. What will be its angular acceleration? a) 37.5 rad/s2 b) 59.3 rad/s2 c) 89.0 rad/s2 d) 178 rad/s2 2. When an object is in static equilibrium a) the net force on it is zero b) the net torque on it is zero c) the net force and net torque are zero d) not enough...
A wheel of radius 15.0 cm consists of a ring of mass 4.00 kg and four...
A wheel of radius 15.0 cm consists of a ring of mass 4.00 kg and four rays of mass 3.00 kg each and length of 15 cm. The wheel rotates with respect to a fixed axis passing through its center, with an acceleration of 1.25 rad/s2. What would be the rotational inertia of the wheel in kg * m2?
A person with mass ma = 75 kg stands on a spinning platform disk with a...
A person with mass ma = 75 kg stands on a spinning platform disk with a radius of R = 1.71 m and mass m-188 kg. The disk is initially spinning at ω = 1 rad/s. The person then walks 2/3 of the way toward the center of the disk (ending 0.57 m from the center). 1)What is the total moment of inertia of the system about the center of the disk when the person stands on the rim of...
10) A solid disk of radius 12.2 cm and mass 4.24 kilograms is spinning at 43.1...
10) A solid disk of radius 12.2 cm and mass 4.24 kilograms is spinning at 43.1 radians per second around an axis through its center. In order to stop the disk from spinning, a piece of plastic is pressed against the edge of the disk, as shown. If the coefficient of kinetic friction between the plastic and the disk is 0.622, with what force must the plastic be pressed against the edge of the spinning disk in order for the...
A disk with radius 0.6 meters and mass 31 kg is spinning about its own center with an angular velocity of 88ed A solid sphere (/ mR2) with a radius of 0.18 meters which is spinning with an angular velocity of -18 ed (the negative sign indicates the opposite 6. rad sec direction), is gently lowered onto the disk a sticks to the disk. The two rotate together (about their mutual center of mass) at an angular velocity of 33...
A baseball (mass 0.14 kg, radius 3.7 cm) s spinning with an angular velocity of 48 rad/s. What Is its rotational kinetic energy?
A person with mass mp = 74 kg stands on a spinning
platform disk with a radius of R = 2.37 m and mass md =
184 kg. The disk is initially spinning at ? = 1.9 rad/s. The person
then walks 2/3 of the way toward the center of the disk (ending
0.79 m from the center).
1) What is the total moment of inertia of the system about the
center of the disk when the person stands...
A person with mass ma = 75 kg stands on a spinning platform disk with a radius of R = 1.71 m and mass m-188 kg. The disk is initially spinning at ω = 1 rad/s. The person then walks 2/3 of the way toward the center of the disk (ending 0.57 m from the center). 1)What is the total moment of inertia of the system about the center of the disk when the person stands on the rim of...
10) A solid disk of radius 12.2 cm and mass 4.24 kilograms is spinning at 43.1 radians per second around an axis through its center. In order to stop the disk from spinning, a piece of plastic is pressed against the edge of the disk, as shown. If the coefficient of kinetic friction between the plastic and the disk is 0.622, with what force must the plastic be pressed against the edge of the spinning disk in order for the...
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