vertical axle with angular speed ω i. A second disk
The device shown in Figure rotates on the vertical axle as shown. The frame has negligible mass as compared to the four masses each of mass m. Initial angular velocity of the system is ω 0 . Due to an internal mechanism the spokes in the frame lengthen so that the frame lengthen so that the radii of the masses become 2a. Initially, it was a. What will be the new angular velocity of the system?
28
Sep
The device shown in Figure rotates on the vertical axle as shown. The frame has negligible mass as compared to the four masses each of mass m. Initial angular velocity of the system is ω 0 . Due to an internal mechanism the spokes in the frame lengthen so that the frame lengthen so [...]
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A disk with moment of inertia I1 rotates about a frictionless ,
drops onto the first disk. Because of friction between the surfaces ,
the two eventually reach the same angular speed ω f. Calculate ω f. ,
this one having moment of inertia I2 and initially not rotating ,
vertical axle with angular speed ω i. A second disk ,
A girl jumps from a height h on the end of a see-saw. The see-saw consists of a uniform plank of length I pivoted at its centre. The plank is horizontal before the girl jumps. The mass of the see-saw is twice the mass of the girl. Find the angular velocity of the plank just after the girl jumps on the plank.
28
Sep
A girl jumps from a height h on the end of a see-saw. The see-saw consists of a uniform plank of length I pivoted at its centre. The plank is horizontal before the girl jumps. The mass of the see-saw is twice the mass of the girl. Find the angular velocity of the plank just [...]
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A disk with moment of inertia I1 rotates about a frictionless ,
drops onto the first disk. Because of friction between the surfaces ,
the two eventually reach the same angular speed ω f. Calculate ω f. ,
this one having moment of inertia I2 and initially not rotating ,
vertical axle with angular speed ω i. A second disk ,
A man of mass 100 kg stands at the rim of a turntable of radius 2 m and moment of interia 4000 kg m^2 mounted on a vertical frictionless shaft at its centre. THe whole system is initially at rest. The man now walks along the outer edge of the turnable with a velocity of 1 m/s relative to the earth.
28
Sep
A man of mass 100 kg stands at the rim of a turntable of radius 2 m and moment of interia 4000 kg m^2 mounted on a vertical frictionless shaft at its centre. THe whole system is initially at rest. The man now walks along the outer edge of the turnable with a velocity of [...]
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A disk with moment of inertia I1 rotates about a frictionless ,
drops onto the first disk. Because of friction between the surfaces ,
the two eventually reach the same angular speed ω f. Calculate ω f. ,
this one having moment of inertia I2 and initially not rotating ,
vertical axle with angular speed ω i. A second disk ,
A small block of mass 4 kg is attached to a cord passing through in a horizontal frictionless surface. The block is originally revolving in a circle of radius 0.5 m about the hole with a tangential velocity of 4 m/s. The cord is then pulled slowely from below shortening the radius of the circle in which the block revolves. The breaking strength of the cord is 600 N. What will be the radius of the circle when the cord breaks?
28
Sep
A small block of mass 4 kg is attached to a cord passing through in a horizontal frictionless surface. The block is originally revolving in a circle of radius 0.5 m about the hole with a tangential velocity of 4 m/s. The cord is then pulled slowely from below shortening the radius of the circle [...]
Tags:
A disk with moment of inertia I1 rotates about a frictionless ,
drops onto the first disk. Because of friction between the surfaces ,
the two eventually reach the same angular speed ω f. Calculate ω f. ,
this one having moment of inertia I2 and initially not rotating ,
vertical axle with angular speed ω i. A second disk ,
A disk with moment of inertia I1 rotates about a frictionless, vertical axle with angular speed ω i. A second disk, this one having moment of inertia I2 and initially not rotating, drops onto the first disk. Because of friction between the surfaces, the two eventually reach the same angular speed ω f. Calculate ω f.
28
Sep
A disk with moment of inertia I1 rotates about a frictionless, vertical axle with angular speed ω i. A second disk, this one having moment of inertia I2 and initially not rotating, drops onto the first disk. Because of friction between the surfaces, the two eventually reach the same angular speed ω f. Calculate ω [...]
Tags:
A disk with moment of inertia I1 rotates about a frictionless ,
drops onto the first disk. Because of friction between the surfaces ,
the two eventually reach the same angular speed ω f. Calculate ω f. ,
this one having moment of inertia I2 and initially not rotating ,
vertical axle with angular speed ω i. A second disk ,