Physics, 17.04.2020 04:30 Gabriella0000
A person with mass mp = 74 kg stands on a spinning platform disk with a radius of R = 2.31 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 0.77 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 the disk? kg-m2 2)What is the total moment of inertia of the system about the center of the disk when the person stands at the final location 2/3 of the way toward the center of the disk? kg-m2 3)What is the final angular velocity of the disk? rad/s 4)What is the change in the total kinetic energy of the person and disk? (A positive value means the energy increased.) J 5)What is the centripetal acceleration of the person when she is at R/3? m/s2 6)If the person now walks back to the rim of the disk, what is the final angular speed of the disk? rad/s
Answers: 1
Physics, 22.06.2019 03:00
Which of the following harmful chemicals are found in tobacco smoke? a. carbon monoxide b. carbon dioxide c. nicotine b. carbon dioxide d. both a and c
Answers: 2
Physics, 22.06.2019 12:20
What is the coefficient of kinetic friction μk between the block and the tabletop?
Answers: 1
Physics, 22.06.2019 18:10
A200-n force is applied to the foot-operated air pump. the return spring s exerts a 2.6-n·m moment on member oba for this position. determine the corresponding compression force c in the cylinder bd. if the diameter of the piston in the cylinder is 40 mm, estimate the air pressure generated for these conditions. state any assumptions. enter a positive number for the compression force c.
Answers: 2
Physics, 22.06.2019 20:00
An element becomes a positively charged ion when itloses protons.loses electrons.gains electrons.gains neutrons.
Answers: 2
A person with mass mp = 74 kg stands on a spinning platform disk with a radius of R = 2.31 m and mas...
Mathematics, 21.01.2021 23:50
History, 21.01.2021 23:50
Mathematics, 21.01.2021 23:50
Mathematics, 21.01.2021 23:50
Chemistry, 21.01.2021 23:50
Engineering, 21.01.2021 23:50
Biology, 21.01.2021 23:50
Mathematics, 21.01.2021 23:50
Mathematics, 21.01.2021 23:50
Health, 21.01.2021 23:50
Mathematics, 21.01.2021 23:50
Computers and Technology, 21.01.2021 23:50
Mathematics, 21.01.2021 23:50
German, 21.01.2021 23:50
Mathematics, 21.01.2021 23:50
Spanish, 21.01.2021 23:50
Business, 21.01.2021 23:50