Determine how high the elevator is from the ground the

Assignment Help Civil Engineering
Reference no: EM13557036

A man riding upward in a freight elevator drops a package off the elevator when it is 100 ft. from the ground. Part A: if the elevator maintains a constant upward speed of 4 ft/s, determine how high the elevator is from the ground the instant the package hits the ground.

Part B: If the package was dropped at t = 0, determine the time t' at which it hits the ground.

Reference no: EM13557036

Questions Cloud

Determine the value of the froude number for : An important dimensionless parameter in certain types of fluid flow problems is the Froude number defined as V/(gl)^1/2 where V is a velocity, g the acceleration of gravity, and l a length
Calculate the density of the unknown gas : A closed tank having a volume of 1.0 ft3 is filled with 0.15 lb of a gas. A pressure gage attached to the tank reads 12 psi when the gas temperature is 80? F. There is some question as to whether the gas in the tank is oxygen or helium. Which do you ..
Determine the density of the air : Some experiments are being conducted in a laboratory in which theair temperature is 26o C and the atmosphericpressure is 14.6 psia. Determine the density of the air.Express your answers in slugs/ft3 andkg/m3.
What will the cars maximum acceleration be under these : A car is traveling on a paved road with CD = 0.35, Af = 21 ft2, W = 3000 lb, ? = 0.002378 slugs/ft3. Its engine is running at 3000 rpm and is producing 250 ft-lb of torque. The car’s gear reduction ratio is 3.5 to 1
Determine how high the elevator is from the ground the : A man riding upward in a freight elevator drops a package off the elevator when it is 100 ft. from the ground. Part A: if the elevator maintains a constant upward speed of 4 ft/s,
Solve the positioning intersection equations dealing with : A minimum of how many satellites must be tracked in order to solve the positioning intersection equations dealing with position (ultimately northing, easting, and elevation coordinates)?
Find the angle in degrees between vector a and the resultant : The acceleration of a particle traveling along a straight line is a=(1/4)s^1/2 m/s^2, where s is in meters. If v=0, s=1 m when t=0, determine the particle's velocity at s=2m
Determine the acceleration of the boxes : Boxes are placed on a slope at uniform intervals of time trelease and slide down the slope with uniform acceleration. Knowing that as a box B is released, the preceding box A has slid 6 meters down the slope and that 1 second later they are 10 meters..
Find the gravitational attraction between them : Two identical spheres of radius 8 in . and weighing 2 lb on the surface of the earth are placed in contact. find the gravitational attraction between them .

Reviews

Write a Review

Civil Engineering Questions & Answers

  Determine the average impact force which is exerted on body

the coefficient of the restitution for the collision is e = 0.3, and friction is negligible. if the time duration of the collision is 0.025 s, determine the average impact force which is exerted on the 3 kg body.

  Should hole a be placed to make the net wind force zero

In strong winds the force can be quite large. Suppose that a hole is introduced in the building’s roof at point A to make pi equal to the surface pressure there. At what angle ? should hole A be placed to make the net wind force zero?

  What is the concentration in ppm at the downstream reach

Five million gallons per day (mgd) of a conservative substance,with concentration of 10 mg/L is released into a stream having anupstream flow of 10.0 mgd and a substance concentration of 3 mg/L.Assume complete mixing.

  Determine correct horizontal distance considering a slope

A civil engineer used a 30-m tape in measuring an inclined distance. The measured length on the slope was recorded to be 459.20 m long. The difference in elevation between the initial and the end point was found to be 1.25 m.

  Calculate the partial pressure exerted by each gas

A 30-liter volume of gas at 25 degrees C contains 12 g of methane (CH4), 1 g of nitrogen (N2), and 15 g of carbon dioxide (CO2). Calculate (a) the moles of each gas present, (b) the partial pressure exerted by each gas, and (c) the total pressure ..

  Determine moles of helium in cylinder

As the piston is compressed, the pressure also increases by 2000000 Pa. If there is 4 times as many atoms of nitrogen as helium, how many moles of helium are in the cylinder?

  Determine where the groundwater divide is located

In a water table aquifer bounded on the ends by rivers, the hydraulic conductivity is 50 m/day. The hydraulic heads at x = 0 and x = 1000 m are 100 m and 90 m, respectively.

  Estimate the area of circle using the lower and upper bounds

Write a simple MATLAB program that will estimate the area of a circle using the lower and upper bounds (using triangles). The user will input the diameter of the circle and the desired accuracy (relative error ) and the program must run

  Draw p-v dia for pure component and label appropriate point

Draw a P-V diagram for pure component and label appropriate points such as superheated region, isothermal line, etc.

  What is the volume of the solids in the oven-dry mass

The solids in a specimen have a specific gravity of 2.65. If the oven-dry mass of the specimen is 25 kg, what is the volume of the solids in it

  Calculate the depreciated portion of the ownership cost

Property taxes,insurance and storage will run 5%.What is the owning cost for the dozer?Use the time value method to calculate the depreciated portion of the ownership cost.

  Compute the value of pb in atm when h=10 m and density

A large closed tank is pressurized as shown. A jet of fluid issues from a small hole. Assume the flow is incompressible, irrotational, quasi-steady and the only body force acting is gravity.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd