Question

ELEVATORS A100 kg person is standing on a scale in an elevator. Starting from rest, the...

ELEVATORS A100 kg person is standing on a scale in an elevator. Starting from rest, the elevator descent attaining a downward speed of 2.0m/s in 4sec. it then travels with a constant speed during the next 2 sec. finally the elevator undergoes a uniform acceleration I. the positive y direction for 10 sec and comes to rest g=9.8m/s^2


what is the scale reading
1. before the elevauor starts
2. during 1st accel
3,while constant
4. during the time slowing down
Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A 65.0 kg person rides in elevator while standing on a scale. The elevator is traveling...
A 65.0 kg person rides in elevator while standing on a scale. The elevator is traveling upward but slowing down at a rate of 2.00 m/s2 . The reading on the scale is closes to
A 150 pounds person is standing on a bathroom scale in an elevator. Calculate the scale...
A 150 pounds person is standing on a bathroom scale in an elevator. Calculate the scale reading in the following conditions: a) the elevator moves upwards with a constant acceleration of 1.5 meters per second square. b) the elevator moves upwards with a constant velocity of 1.5 meters per second c) the elevator moves downward with a constant acceleration of 2 meters per second square. d) the elevator moves downward with a constant velocity of 2 meters per second.
1. A 55.0 kg person rides in an elevator while standing on a scale. The elevator...
1. A 55.0 kg person rides in an elevator while standing on a scale. The elevator is traveling downward but slowing down at a rate of 1.5 m/s^2. The reading on the scale is closest to... 2. A batter hits a 130-gramm baseball that was approaching him horizontally at 45.0 m/s and, as a result, the ball leaves the bat at 45.0 m/s in the direction of the pitcher. What is the magnitude of the impulse delivered to the baseball?...
an elevator of mass m = 400 kg starts from rest and is lowered to the...
an elevator of mass m = 400 kg starts from rest and is lowered to the ground by a rope in three stages. During the first second, it accelerates at 3 m/s^2 downward, then continues at a constant speed for six seconds, then slows down to a rest at 1 m/s^2 for three seconds. a) find the initial height of the elevator. b) find the total work done by the elevator by the rope. c) find the average power done...
A 643-kg elevator starts from rest and moves upward for 3.80 s with constant acceleration until...
A 643-kg elevator starts from rest and moves upward for 3.80 s with constant acceleration until it reaches its cruising speed, 1.69 m/s. (a) What is the average power of the elevator motor during this period? . hp (b) How does this amount of power compare with its power during an upward trip with constant speed? (Give the power during an upward trip with constant speed.) hp
A(n) 603 kg elevator starts from rest. It moves upward for 3.88 s with a constant...
A(n) 603 kg elevator starts from rest. It moves upward for 3.88 s with a constant acceleration until it reaches its cruising speed of 1.78 m/s. The acceleration of gravity is 9.8 m/s 2 . Find the average power delivered by the elevator motor during this period. Answer in units of kW.
Description: A single mass m1 = 3.9 kg hangs from a spring in a motionless elevator....
Description: A single mass m1 = 3.9 kg hangs from a spring in a motionless elevator. The spring is extended x = 11 cm from its unstretched length. the spring constant of the spring is 347.45 N/m Now, three masses m1 = 3.9 kg, m2 = 11.7 kg and m3 = 7.8 kg hang from three identical springs in a motionless elevator. The springs all have the same spring constant that you just calculated above. the force the top spring...
A 132 lb. (60 kg) person does a standing vertical jump. Starting from rest, she jumps...
A 132 lb. (60 kg) person does a standing vertical jump. Starting from rest, she jumps vertically and reaches 70 cm (= 0.7m). The push-off phase takes 0.5 seconds. After being airborne, the landing takes 0.5 seconds before she comes to rest. e. What is her vertical velocity when she becomes airborne? When she lands? f. How much mechanical work did the leg muscles produce during the push-off? g. How much power did the leg muscles generate during the push...
A computer hard disk starts from rest, then speeds up with an angular acceleration of 210...
A computer hard disk starts from rest, then speeds up with an angular acceleration of 210 rad/ s^2 for 5.0 s until it reaches its final angular speed. It rotates for another 6.0 s at that constant angular speed. It then slows down and comes to rest in 9.0 s. A. determine the angular speed of the disk 5.0 s after start up. Express your answer in rad/s and rpm (rev/min). B. determine the angular speed of the disk 11.0...
A car stating from rest accelerates at 2 m/s2 for 5 seconds. The driver then maintians...
A car stating from rest accelerates at 2 m/s2 for 5 seconds. The driver then maintians a steady speed for 12 seoncds. The car the undergoes an accelration of -2.5m/s2 until it reaches a speed of 4 m/s. A. what was the speed of the car after 2 seconds? B. how far did the car travel during the interval of constant speed? C. how much time did the car spend slowing down? d. what was the total distane the car...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT