Physics, 19.10.2019 01:30 ddmoorehouseov75lc
Acomputer hard disk 8.0 cm in diameter is initially at rest. a small dot is painted on the edge of the disk. the disk accelerates at 610 rad/s2 for 12s, then coasts at a steady angular velocity for another 12s.
a. what is the speed of the dot at t = 1.0 s? 12m/s
b. through how many revolutions has it turned?
Answers: 3
Physics, 22.06.2019 02:00
The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s
Answers: 3
Physics, 22.06.2019 14:40
During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?
Answers: 1
Acomputer hard disk 8.0 cm in diameter is initially at rest. a small dot is painted on the edge of t...
Mathematics, 31.01.2020 08:00
Mathematics, 31.01.2020 08:00
Physics, 31.01.2020 08:00
Health, 31.01.2020 08:00
Mathematics, 31.01.2020 08:01
History, 31.01.2020 08:01
Mathematics, 31.01.2020 08:01
History, 31.01.2020 08:01
Mathematics, 31.01.2020 08:01
Mathematics, 31.01.2020 08:01