A 1500 kg load is lifted by a hoist using a Ø1.5 m drum. The drum is driven by an electric motor.through a gearbox with a reduction ratio- 25. At a certain instant, 175 m of unwrapped rope is lifting the load and 7.4 m of rope is wrapped on the drum. மmm; diameter = 215 m IonuM- 322 kg-m- (includes the inertia effects of the gearbox only) Motor speed - TMOTOR 1200 rpm 1.24 kg-m Rope: mass: 3 kg al Show that the equivalent momeat of inertia of the notor and drim gearbox is 1109.5 kg-m" at the drum. by At this instant, determine the motor torgpe required if the load as accelerating upward at 3,5 ms-.
A 1500 kg load is lifted by a hoist using a Ø1.5 m drum. The drum is driven by an electric motor.through a gearbox with a reduction ratio- 25. At a certain instant, 175 m of unwrapped rope is lifting the load and 7.4 m of rope is wrapped on the drum. மmm; diameter = 215 m IonuM- 322 kg-m- (includes the inertia effects of the gearbox only) Motor speed - TMOTOR 1200 rpm 1.24 kg-m Rope: mass: 3 kg al Show that the equivalent momeat of inertia of the notor and drim gearbox is 1109.5 kg-m" at the drum. by At this instant, determine the motor torgpe required if the load as accelerating upward at 3,5 ms-.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:A 1500 kg load is lifted by a hoist using a Ø1.5m drum. The drum is driven by an
electric motor through a gearbox with a reduction ratio-25, At a certain instant, 175
m of unwrapped rope is lifling the load and 7.4 m of rope is wrapped on the drum.
Drum:
diameter ØI5 m
IDRUM –
322 kg-m² (includes the inertia effects of the gearbox only)
Motor,
speed
IMOTOR
1200 rpm
1.24 kg-m2
Rope:
3 kel
a) Show that the equivalent moment of inertia of the motor and drumgearbox is
2695 kg-m the drum
byArthis instant, determine the motor toreue requinedifthe load is accelerating
q t the load s accelerating
upward at 3.5 s-
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