(a) A 120-lb woman rides a 15-lb bicycle up a 3-percent slope at a constant speed of...
Question:
(a) A 120-lb woman rides a 15-lb bicycle up a 3-percent slope at a constant speed of 5 ft/s. How much power must be developed by the woman?
(b) A 180-lb man on an 18-lb bicycle starts down the same slope and maintains a constant speed of 20 ft/s by braking. How much power is dissipated by the brakes?
Ignore air resistance and rolling resistance.
Transcribed Image Text:
5 ft/s 20 ft/s 3% slope
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 71% (14 reviews)
tan 3100 1718 o a W W B W W 15 120 W 135 lb P W Wv Wsin...View the full answer
Answered By
Pushpinder Singh
Currently, I am PhD scholar with Indian Statistical problem, working in applied statistics and real life data problems. I have done several projects in Statistics especially Time Series data analysis, Regression Techniques.
I am Master in Statistics from Indian Institute of Technology, Kanpur.
I have been teaching students for various University entrance exams and passing grades in Graduation and Post-Graduation.I have expertise in solving problems in Statistics for more than 2 years now.I am a subject expert in Statistics with Assignmentpedia.com.
4.40+
3+ Reviews
10+ Question Solved
Related Book For
Vector Mechanics for Engineers Statics and Dynamics
ISBN: 978-0073398242
11th edition
Authors: Ferdinand Beer, E. Russell Johnston Jr., David Mazurek, Phillip Cornwell, Brian Self
Question Posted:
Students also viewed these Mechanics questions
-
(a) A 60-kg woman rides a 7-kg bicycle up a 3 percent slope at a constant speed of 2 m/s. How much power must be developed by the woman? (b) A 90-kg man on a 9-kg bicycle starts down the same slope...
-
A 20-cm-diameter sphere is totally enclosed by a large mass of glass wool. A heater inside the sphere maintains its outer surface temperature at 170C while the temperature at the outer edge of the...
-
A large storage tank contains saturated liquid nitrogen at ambient pressure, 100 kPa; it is to be pumped to 500 kPa and fed to a pipeline at the rate of 0.5 kg/s. How much power input is required for...
-
Accounting for Contingencies and Provisions In accounting, contingencies and provisions play a crucial role in preparing financial statements and ensuring accurate representation of a company's...
-
Your examination of the records of a company that follows the cash basis of accounting tells you that the company??s reported cash basis earnings in 2012 are $33,640. If this firm had followed...
-
To find out whether employees are interested in joining a union, a manufacturing company hired an employee relations firm to survey attitudes toward unionization. In addition to a rating of their...
-
Randomly permute each row of the matrix below using R. \[\left[\begin{array}{llll}1 & 1 & 1 & 1 \\2 & 2 & 2 & 2 \\3 & 3 & 3 & 3 \\4 & 4 & 4 & 4\end{array} ight]\] You can construct the matrix below...
-
Will Jones, LLP is a small CPA firm that focuses primarily on preparing tax returns for small businesses. The company pays a $500 annual fee plus $10 per tax return for a license to use Mega Tax...
-
On 1 April 2021, Tencent stock price was $630 Tencent: 630 call $26.00; 600 call $43.80; 660 call $14.30 and Tencent. 630 put $22.90; 600 put $11.27; 660 put $41.70. 100 shares) Both call and put...
-
You have been asked to prepare the financial statements for Computer Solutions for the year ended December 31, 2021. The following additional facts are collected for use in making adjusting entries...
-
It takes 15 s to raise a 1200-kg car and the supporting 300-kg hydraulic car-lift platform to a height of 2.8 m. Determine - The average output power delivered by the hydraulic pump to lift the...
-
In an ore-mixing operation, a bucket full of ore is suspended from a traveling crane which moves along a stationary bridge. The bucket is to swing no more than 10 ft horizontally when the crane is...
-
If an LE test were conducted on a sample of Swedish clay identical to that tested in Problem 13.56, predict the pore pressure versus strain response of the clay. What are uf and A f? What is T?
-
Air enters a smooth, insulated $3 \mathrm{~cm}$ diameter duct with stagnation pressure and temperature of $200 \mathrm{kPa}, 500 \mathrm{~K}$, and a velocity of $100 \mathrm{~m} / \mathrm{s}$....
-
A cylindrical wire initially has resistance \(R\) and length \(\ell\). The wire is clamped in place at its midpoint, and the portion to the left of the clamp remains unchanged. The portion to the...
-
Air flows in a frictionless, adiabatic duct at M = 0.6 and P 0 = 500 kPa. The cross-sectional area of the duct is 6 cm 2 and the mass flow rate is 0.5 kg/s. If the area of the duct near the exit is...
-
Even though silver is a better electrical conductor than copper, most electrical cables are made from copper. The main reason is cost: The per-kilogram price of silver is about 100 times the...
-
When you step on the brake pedal in your car, charge carriers flow from the battery to the rear brake lights. Suppose the wire connecting the switch at the pedal to the brake lights is made of copper...
-
First, you be the worker and let your partner play the part of a person who is seeking help for a personal problem or condition. Play the recording back. Critique your efforts with your partner,...
-
[a] Two foam blocks, each with a charge of 19 micro coulombs (1 C = 10-6 C), are both held in place 19 cm apart in the east-west direction. A foam ball with a charge 49 C is placed 55 cm north of the...
-
The plate shown moves in the xy plane. Knowing that (v A ) x = 12 in./s, (v B ) x = 4 in./s, and (v C ) y = 24 in./s, determine (a) The angular velocity of the plate, (b) The velocity of point B, (c)...
-
A person walks radially inward on a platform that is rotating counterclockwise about its center. Knowing that the platform has a constant angular velocity and the person walks with a constant speed...
-
The sprocket wheel and chain shown are initially at rest. If the wheel has a uniform angular acceleration of 90 rad/s 2 counterclockwise, determine (a) The acceleration of point A of the chain, (b)...
-
If they are both eligible to collect the maximum CPP at age 65, what would their individual retirement incomes be including a 6% gross withdrawal from their RRIF and pension plans? (6 Marks)
-
What term refers to raising funds and buying assets to obtain the highest possible return?
-
Modeler's prospective stock has a 15% chance of producing a 75% return, a 25% chance of producing a 22% return, a 40% chance of producing a 9% return, and a 20% chance of producing a -20% return.What...
Study smarter with the SolutionInn App