Apopular ride at some playgrounds consists of two circular disks joined by rungs . the center of the unit is attached to a horizontal axle around which the unit rotates. the rotational inertia of the unit is 550 kgâ‹…m2 , and its radius is 1.00 m. a 30-kg child runs and grabs the bottom rung of the ride when it is initially at rest. because the child can pull herself up to meet the rung at waist height, treat her as a particle located on the rung. the friction between unit and axle is minimal and can be ignored. what is the minimum speed v the child must have when she grabs the bottom rung in order to make the unit rotate about its axle and carry her over the top of the unit? express your answer with the appropriate units.
Answers: 3
Physics, 22.06.2019 14:40
14. a body is projected with velocity vi from a.at the same time another body is projectedvertically upwards from point b withvelocity v2 lies vertically below the highestpoint. both the bodies collide thenv2÷v1is
Answers: 1
Physics, 22.06.2019 16:50
Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°c by rejecting waste heat to cooling water that enters the condenser at 18°c at a rate of 0.25 kg/s and leaves at 26°c. the refrigerant enters the condenser at 1.2 mpa and 50°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.
Answers: 2
Physics, 22.06.2019 22:00
Awhite-blue star is hotter than a red star. select the best answer from the choices provided true or false
Answers: 2
Physics, 23.06.2019 01:30
If the pressure in a gas is doubled while its volume is held constant. true or false
Answers: 3
Apopular ride at some playgrounds consists of two circular disks joined by rungs . the center of the...
Mathematics, 20.04.2020 23:55
English, 20.04.2020 23:55
Mathematics, 20.04.2020 23:55
Spanish, 20.04.2020 23:55
History, 20.04.2020 23:55
Physics, 20.04.2020 23:55
Mathematics, 20.04.2020 23:55
Mathematics, 20.04.2020 23:55