A circular disc of moment of ertia 20 kg-m is rotated about its transverse symmetry axis at a constant frequency of 90 rpm by electric motor having power 31.42 watts. When motor gets switch off how many rotations does it completes before coming to rest ?

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Q: A 4 kg object rotates at 30 rpm about a fixed axis through its center of mass. What is the total…

A: Given:-  The object of mass  m = 4 kg  The object rotated with the speed of 30 rpm  about a fixed…

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A: NOTE: As per guidelines, I can solve one question at a time. If you need help with another question…

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Q: A thin-walled, hollow spherical shell of mass m and radius r starts from rest and rolls without…

A: I=2/3Mr²

Q: 51. B SSM A flywheel is a solid disk that rotates about an axis that is perpendicular to the disk at…

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Q: Given: tritium activity in a 100 kg body = 3.57 X 10^18 Bq Write out the radioactive decay equation…

A: Tritium is one of the two isotopes of Hydrogen with another being deuterium. It has two and a proton…

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A: Given Data : The total mechanical energy of the satellite is given as Em=-3.52×107 J The kinetic…

Q: A 1.50 kg hoop of radius 0.160 m is released from rest at point A in the figure below, Its center of…

A: a) at           VB = RWB              (No slipping) applying law or conservation of energy in…

Q: How much rotational kinetic energy in joules is there in a disk  of radius 0.2 meters and mass 76 kg…

A: Given,    r = 0.2 m   m = 76 kg  turns = 1000/s          = 1000×3600×π180 = 6285.713 rad/s

Q: -0.06t The angular velocity of a pulley of mass m and radius R changes with time w(t) = 36e many…

A: Given angular velocity is : ωt=36 e-0.06t rad/s Let θ be the displacement at any time t. So for…

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Q: What is the kinetic energy of a 123 cm long thin uniform rod with a mass of 458 g that is rotating…

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Q: A screwdriver turns a screw an angle of 5.09 radians by applying a torque given by (in Nm) T= 1.57 +…

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Q: A primitive yo-yo has a massless string wrapped around a solid cylinder with mass M and radius R.…

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Q: a flat circular frisbee of mass 2.26 and radius .669 meters is thrown in such a way that the speed…

A: Given: mass m = 2.26 kg radius R = 0.669 m velocity v = 0.838 m/s frequency   ω=21.7 rot/min =…

Q: The angular velocity of a pulley of mass m and radius R changes with time w(t) = 60e-0.02t (rad/s).…

A: Given: The angular velocity isωt=60e-0.02t rads The expression fir angle rotated is:…

Q: A 3.5-inch floppy disk in a computer rotateswith a period of 2.00 * 10-1s. What are (a) the angular…

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Q: A disk of radius R = 50 cm begins to rotate from rest so that after 6 seconds it reaches a rotation…

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Q: A thin-walled, hollow spherical shell of mass m and radius r starts from rest and rolls without…

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Q: Two wheels of moment of inertia 9.9 kg.m and 4.6 kg.m are set in rotation with angular speed 5.1…

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Q: A solid sphere of mass 0.05 kg and diameter 2 × 10-2 m rolls without slipping with a uniform…

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Q: A coin rolls on a horizontal plane. What fraction of its total kinetc energy is rotational?

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Q: o bod.ods of halqcs A constant torque of 500 N•m is applied to a small windmill on a miniature golf…

A: Recall P=FV  for translational velocity P=τω for rotational velocity

Q: A thin, 90.0 g disk with a diameter of 6.00 cm rotates about an axis through its center with 0.240 J…

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Q: The kinetic energy of a uniform) rotating disc is 31.56 J. Calculate its M.I. if performs 120…

A: To find-M.I. of disc=?Given-Kinetic energy of a disc=31.56 JFrequency of revolution (n)=120 r.p.m.…

Q: How much rotational kinetic energy in joules is there in a disk  of radius 0.2 meters and mass 33 kg…

A: The equation for the rotational kinetic energy is, K.E.=12Iω2 Here, I is the moment of inertia, ω is…

Q: 3. (a) Calculate be the speed of a ring of mass M and radius Ro when it reaches the bottom of an…

A: Apologies. We only answer one question at a time. we will answer the first one as the exact one…