Question

An elevator car including the passengers has a mass of 1100 kg and travels downwards at...

An elevator car including the passengers has a mass of 1100 kg and travels downwards at constant speed of 4.000 m/s for 32.00 m. The force of friction averaging 80.00 N acts on the elevator. The work done by the force of gravity; the work done by the force of friction; and the work done by the cable supporting the elevator during the 32.00 m excursion were (in that order, in kJ):

Answer: 345.0; -2.560; -342.4

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
An elevator car has a mass of 1600 kg and is carrying passengers having a combined...
An elevator car has a mass of 1600 kg and is carrying passengers having a combined mass of 300 kg. A constant friction force of 4000 N retards its motion. How much power must a motor deliver to lift the elevator car and its passengers at a constant speed of 3.00 m/s _____. a. 4.39e4 W b. 6.79 e4 W c. 5.02e4 W d. 2.62e4 W
An elevator has a mass of 2,000 kg and is carrying a load of passengers with...
An elevator has a mass of 2,000 kg and is carrying a load of passengers with a combined mass of 250 kg. A constant friction force of 3,000 N retards the motion of the elevator. recall; P = dW/dt a) How much power must the motor provide to lift the car at a constant speed of 4 m/s? b) How much power is required to provide the elevator car with 9.8 m/s^2 of acceleration at 1 m/s vs 4 m/s?
Suppose a 1300-kg elevator car is lifted a distance 39 m by its cable at a...
Suppose a 1300-kg elevator car is lifted a distance 39 m by its cable at a constant speed, assuming the frictional force on the elevator has a constant value of 95 N. Part (a). Calculate the work done on the elevator by its cable, in joules. Part (b). Calculate the work done by the gravitational force on the elevator, in joules, during this process. Part (c). Calculate the total work done on the elevator, in joules.
An elevator filled with passengers has a mass of 1583 kg. (a) The elevator accelerates upward...
An elevator filled with passengers has a mass of 1583 kg. (a) The elevator accelerates upward from rest at a rate of 1.20 m/s2 for 2.00 s. Calculate the tension in the cable (in N) supporting the elevator. (b)The elevator continues upward at constant velocity for 9.22 s. What is the tension in the cable (in N) during this time? (c)The elevator decelerates at a rate of 0.600 m/s2 for 4.00 s. What is the tension in the cable (in...
You are designing a high-speed elevator for a new skyscraper. The elevator will have a mass...
You are designing a high-speed elevator for a new skyscraper. The elevator will have a mass limit of 2400 kg (including passengers). For passenger comfort, you choose the maximum ascent speed to be 18.0 m/s, the maximum descent speed to be 10.0 m/s, and the maximum acceleration magnitude to be 2.40 m/s2. Ignore friction. a) What is the maximum upward force that the supporting cables exert on the elevator car? b) What is the minimum upward force that the supporting...
You are designing a high-speed elevator for a new skyscraper. The elevator will have a mass...
You are designing a high-speed elevator for a new skyscraper. The elevator will have a mass limit of 2400 kg (including passengers). For passenger comfort, you choose the maximum ascent speed to be 18.0 m/s, the maximum descent speed to be 10.0 m/s, and the maximum acceleration magnitude to be 3.20 m/s2. Ignore friction. What is the maximum upward force that the supporting cables exert on the elevator car? What is the minimum upward force that the supporting cables exert...
An elevator car has a mass of 1500 kg carry 3 passengers with a total mass...
An elevator car has a mass of 1500 kg carry 3 passengers with a total mass of 330 kg. The lift operates with a constant frictional force of 2 700 N working against the motion of the elevator. How much power must the motor deliver to the elevator cart to keep it moving at a constant speed of 2.4 ms-1 ? How much power would need to be supplied by the motor if it was 70% efficient?
An elevator cable breaks when a 875 kg elevator is 20.0 m above the top of...
An elevator cable breaks when a 875 kg elevator is 20.0 m above the top of a huge spring (k = 6.00×104 N/m ) at the bottom of the shaft. Calculate the work done by gravity on the elevator before it hits the spring. Calculate the speed of the elevator just before striking the spring. Calculate the amount the spring compresses (note that here work is done by both the spring and gravity).
An elevator cable breaks when a 970 kg elevator is 23.0 m above a huge spring...
An elevator cable breaks when a 970 kg elevator is 23.0 m above a huge spring (k = 2.10×105 N/m ) at the bottom of the shaft. Calculate the work done by gravity on the elevator before it hits the spring. Calculate the speed of the elevator just before striking the spring. Calculate the magnitude of the amount the spring compresses (note that work is done by both the spring and gravity in this part.
Please be detailed! Will rate! An elevator carries a group of people from the ground floor...
Please be detailed! Will rate! An elevator carries a group of people from the ground floor to the third floor of a building. The elevator and passengers have a combined mass of 2600 kg. The height of one floor is 4.5 m. If the elevator moves at a constant speed and goes from the ground floor to the third floor in one minute, calculate the work done on the elevator by gravity, the work done on the elevator by the...