Answered: A 128 lb person steps into an elevator… | bartleby

Related questions

Question

A 128 lb person steps into an elevator at the ground floor. The elevator accelerates upward at 5.0 ft/s^2 until reaching a velocity of 24 ft/s. It then holds this velocity until decelerating (a=-5.0 ft/s^2) to a stop at the top floor. What is the normal force on the person in each of the three phases of this trip?

Expert Solution

Step by step

Solved in 5 steps with 5 images

SEE SOLUTION Check out a sample Q&A here

Blurred answer

Similar questions

A person stands on a scale in an elevator. As the elevator starts, the scale has a constant reading of 592 N. As the elevator later stops, the scale reading is 400 N. Assume the magnitude of the acceleration is the same during starting and stopping.
You are in an elevator that is initially at rest. At t=0, it heads downward and speeds up as a function of time. It experiences a velocity given by v(t) = (−2.00t²ĵ)² m S a) What is the normal force that you experience at t=1.20 s? Assume you have a mass of 70.0 kg. b) How far did the elevator drop in 1.20 s?
77 X 7. A roller coaster reaches the top of the steepest hill with a speed of 6.80 km/h. It then descends the hill, which is at an average angle of 40° and is 59.0 m long. What will its speed be when it reaches the bottom? Assume Hk = 0.16. m/s E C 4 F T G B MacBook Air H U N J WA M K MOSISO भ command option
A 12 kg meteor experiences an acceleration of 7.2 m/s*2, when falling towards the earth. a) How high above the earth's surface is the meteor? b) What force will a 30 kg meteor experience at the same altitude?
We start with some review problems A crate of mass 20.0 kg rests on a level surface, with a coefficient of kinetic friction 0.219. You push on the crate with an applied force of 297 N. What is the magnitude of the crate s acceleration as it slides? 12.70 m/s^2 14.85 m/s^2 6.35 m/s^2 20.79 m/s^2
Determine the force Q-> when the block moves with constant velocity. Express your answer in vector form.
A 250 gram block on a 30 deg inclined plane is attached by an inextensible string going over a frictionless pulley to a 500 gram hanging weight. The static and kinetic friction coefficients are .25 and .123. What is the acceleration of the blocks in cm/s² O 376 O 563.7 O455.2 O 292.4 O 192.4
A person catches a ball with a mass of 145 g dropped from a height of 60.0 m above his glove. His hand stops the ball in 0.0100 s. What is the force exerted by his glove on the ball? Assume the ball slows down with constant acceleration.
A commercial airplane is coming in for a landing. Just before it hits the runway it is moving at 76 m/s. The plane has a mass of 20,000 kg. The runway is 1.6km long and, obviously, the airplane needs to be stopped before it reaches the end of the runway. How large is the braking force the airplane needs to stop safely before the end of the runway?
A 3 kg particle moves along an x axis, being propelled by a variable force directed along that axis. Its position is given by x = 2 m + (2 m/s)t + ct2 - (3 m/s³)t³ with x in meters and t in seconds.The factor c is a constant. At t = 4 s the force on the particle has a magnitude of 33N and is in the negative direction of the axis. What is c? Number Units
You push a box up a slope with kinetic friction at a constant speed. Which of these is true? O AK = 0, AUg > 0, AEmech > 0, AÉth > 0 O AK > 0, AUg > 0, AEmech >0, AEth > 0 O AK = 0, AUg > 0, AEmech = 0, AEth > 0 O AK > 0, AUg 0
Two crates of fruit are released from the top of a ramp inclined at 30 degrees from the horizontal and 4.5 meter long. The two crates consist of an apple crate of mass 20 kg that is placed in front of a watermelon crate of mass 80 kg. The apple crate has a coefficient of friction of 0.20 while the watermelon crate has a coefficient of friction of 0.15. How long does it take the apple crate to reach the bottom of the incline if it needs to travel a distance of 4.5 meters?

SEE MORE QUESTIONS