Log in
Mathematics
1
answer
0
watching
224
views

A 360-lb gorilla climbs a tree to a height of 20 ft. Find the work done if the gorilla reaches that height in

  1. 10 seconds (b) 5 seconds

Watch
1
answer
0
watching
224
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Bunny Greenfelder
Bunny GreenfelderLv2
25 May 2020

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share

Related questions

A tank full of water has the shape of a paraboloid of revolution as shown in the figure; that is, the shape is obtained by rotating a parabola about a vertical axis.

  1. If its height is 4 ft and the radius at the top is 4 ft, find the work required to pump the water out of the tank?

  2. After 4000 ft-lb work has been done, what is the depth of the water remaining in the tank?

Show how to approximate the required work done by a Riemann sum. Then express the work as an integral an evaluate it.

A cable that weighs 2 lb/ft is used to lift 800 lb of coal up a mine shaft 500 ft deep. Find the work done.

The Great Pyramid of King Khufu was built of limestone in Egypt over a 20-year time period from 2580 BC to 2560 BC. Its base is a square with side length 756 ft and its height when built was 481 ft. (It was the tallest man made structure in the world for more than 3800 years.) The density of the lime stone is about 150.

  1. Estimate the total work done in building the pyramid.

  2. If each laborer worked 10 hours a day for 20 years, for 340 days a year, and did 200 ft-lb/h of work in lifting the limestone blocks into place, about how many laborers were needed to construct the pyramid?

Weekly leaderboard

Home
Homework Help 3,900,000
Mathematics 240,000
Start filling in the gaps now
Log in