if the elevator is at rest?What does the scale read when the elevator rises at a constant velocity?The elevator slows down at -2.7 m/s 2 as it reaches the desired floor.What does the scale read?The elevator descends at -2.7 m/s2.What does the scale read?If the cable snapped andd the elevator fell freely,what would the scale read?
2006-08-23 18:11:02 · 6 answers · asked by xxgodsgift2youxx 1 in Science & Mathematics ➔ Physics
Elevator at rest 980N (mass x g)
Elevator at constant velocity 980N
Elevator decelerating at -2.7: 100*(9.8-2.7)=710N
Elevator descends at -2.7: 710N
Elevator free falls: scale reads 0
2006-08-23 18:24:44 · answer #1 · answered by gp4rts 7 · 3⤊ 0⤋
At constant velocity, the person's weight would be 1000N.
When it rises up and slows down near the desired floor, it would read 100*(10+2.7)=1270N
When it descends at same rate, it would read,
100*(10-2.7)=730N
When the cable is snapped an elevator falls freely, it would again read 100*10=1000 N..
PS: Here am assuming acceleration due to gravity to be 10m/s2.
2006-08-23 18:20:45 · answer #2 · answered by Anonymous · 0⤊ 2⤋
At constant velocity; 100kg. Slowing down;73 kg. Accelerating downward at 2.7 m/s2; 73 kg. Free fall; zero.
2006-08-23 18:39:12 · answer #3 · answered by zee_prime 6 · 3⤊ 0⤋
if the elevator is at rest then reding is=1000N
........................ RISES AT A CONSTANT VELOCITY REDING IS=1000N
WHEN THE ELEVATOR SLOWS DOWN 2 REACH THE DESIRED FLOOR THEN READING IS=730N
WHEN THE ELEVATOR DESENDS AT THE RATE -2.7m/s2 then reading is=1270N
WHEN FREE FALLING CASE THEN READING IS= 0 N
ACC DUE 2 GRAVITY IS =10 M/S2
2006-08-24 20:24:20 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Correct answers above, but we are not here to do your homework, Darling!
2006-08-23 22:53:09 · answer #5 · answered by just "JR" 7 · 0⤊ 1⤋
980.7 on the earth's surface
2006-08-23 18:23:12 · answer #6 · answered by Anonymous · 0⤊ 0⤋