A car is to be hoisted by elevator to the fourth floor of a parking garage,...

A car is to be hoisted by elevator to the fourth floor of a parking garage, which is 48 ft above the ground. Part A If the elevator can accelerate at 0.8 ft/s2, decelerate at 0.3 ft/s2, and reach a maximum speed of 8 ft/s, determine the shortest time to make the lift, starting from rest and ending at rest.

Expert Solution

please give feedback

genius_generous answered 6 months ago

The parking superintendent is responsible for snow removal at his parking garage. The probabilities for the...

The parking superintendent is responsible for snow removal at his parking garage. The probabilities for the number of days per year requiring snow removal are shown in the chart below. These probabilities are independent from year to year. The superintendent can contract for snow removal at a cost of $500 per day. Alternatively, he can purchase a snow-removal machine for $40,000. It is expected to have a useful life of 10 years and no salvage value at that time. Annual...

Suppose an elevator is controlled by two commands: ↑ to move the elevator up one floor...

Suppose an elevator is controlled by two commands: ↑ to move the elevator up one floor and ↓ to move the elevator down one floor. Assume that the building is arbitrarily tall and that the elevator starts at floor x. A)Write an LL(1) grammar that generates arbitrary command sequences that (1) never cause the elevator to go below floor x and (2) always return the elevator to floor x at the end of the sequence. For example, ↑↑↓↓ and ↑↓↑↓...

A monkey sits on a bathroom scale which is on the floor of an elevator for...

A monkey sits on a bathroom scale which is on the floor of an elevator for a very tall building. The monkey has a mass of 42.0 kg. What is the reading on the scale if there is not motion and no acceleration? When the elevator starts moving the scale reads 480 N. Describe the acceleration for this case. At another time the scale reads 360 N. Describe the acceleration for this second case. Calculate the acceleration in each...

1) a. There is an elevator on the 102th floor of the Empire State Building with...

1) a. There is an elevator on the 102th floor of the Empire State Building with a sign: MAXIMUM WEIGHT 2900 LBS. During refurbishment, the cable was being replaced. A section of the new cable is cut up and tested for its breaking strength. The cable was tested 20 times and the average breaking point of the sample was found to be 3100 LBS with a standard deviation of 280 LBS. Construct an appropriate hypothesis test that determines whether the...

An object is placed on the floor of an elevator. Which of the following statements is...

An object is placed on the floor of an elevator. Which of the following statements is correct regarding the magnitude of the normal force that the elevator floor exerts on the object? A) It is always the same as the weight of the object regardless the state of motion of the elevator B) It is less than the weight of the object if the elevator moves downward with a constant velocity C) It is largest if the elevator undergoes free...

A box of mass sits on the floor of an elevator. The area of the bottom...

A box of mass sits on the floor of an elevator. The area of the bottom surface of the box is 0.250 m2. When the elevator is moving upward at a constant speed of 2.00 m/s the pressure the box exerts on the floor is 981 pascal. (Note: One Pascal equals one Newton per square meter; 1 Pa = 1 N/m2). Calculate the pressure the box exerts on the floor while the elevator a. slows uniformly from an upward speed...

draw a PLC ladder diagram for 5 floor elevator

Use CPP 1) Parking charge application: A parking garage charges a $20.00 minimum fee to park...

Use CPP 1) Parking charge application: A parking garage charges a $20.00 minimum fee to park for up to 3 hours. The garage charges an additional $5.00 per hour for hour or part thereof in excess of 3 hours. The maximum charge for any given 24-hour period is $50.00. Assume that no car parks for longer than 24 hours at a time. Write a program that calculates and prints the parking charge for each of 3 customers who parked their...

The elevator starts from rest at the first floor of the building and comes to a...

The elevator starts from rest at the first floor of the building and comes to a complete stop at the 6th floor. It can accelerate at 6 ft/s2 and then decelerate at 2 ft/s2 Determine the shortest time is takes to reach the 6th floor, which is 60 ft above the ground. Draw the v?t and s?t graphs for the motion of the elevator.

A city built a new parking garage in a business district. For a random sample of...

A city built a new parking garage in a business district. For a random sample of 64 days, daily fees collected averaged $2,000, with a standard deviation of $400. (a) Construct a 90% confidence interval estimate of the mean daily parking fees collected. (b) Describe the confidence interval in everyday language.

Question