Consider the woman doing push-ups in the figure. She has a mass of 55.4 kg, and...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
Consider the woman doing push-ups in the figure. She has a mass of 55.4 kg, and the distance from her feet to her center of mass is 0.81 m, while the distance from her feet to her hands is 1.75 m. Fp a CG W Freaction m A 25% Part (a) What force in newtons should the woman in the figure exert on the floor with each hand to do a push-up? Assume that she moves up at a constant speed. A 25% Part (b) The triceps muscle at the back of her upper arm has an effective lever arm of 1.35 cm, and she exerts force on the floor at a horizontal distance of 19.5 cm from the elbow joint. Calculate the magnitude of the force in newtons for each triceps muscle. A 25% Part (c) How much work in joules does she do if her center of mass rises 0.22 m? DA 25% Part (d) What is her useful power output, in watts, if she does 25 pushups in one minute? For the sake of simplicity, ignore any power used by her muscles lowering her body during each pushup. Consider the woman doing push-ups in the figure. She has a mass of 55.4 kg, and the distance from her feet to her center of mass is 0.81 m, while the distance from her feet to her hands is 1.75 m. Fp a CG W Freaction m A 25% Part (a) What force in newtons should the woman in the figure exert on the floor with each hand to do a push-up? Assume that she moves up at a constant speed. A 25% Part (b) The triceps muscle at the back of her upper arm has an effective lever arm of 1.35 cm, and she exerts force on the floor at a horizontal distance of 19.5 cm from the elbow joint. Calculate the magnitude of the force in newtons for each triceps muscle. A 25% Part (c) How much work in joules does she do if her center of mass rises 0.22 m? DA 25% Part (d) What is her useful power output, in watts, if she does 25 pushups in one minute? For the sake of simplicity, ignore any power used by her muscles lowering her body during each pushup.
Expert Answer:
Related Book For
Physics
ISBN: 978-0077339685
2nd edition
Authors: Alan Giambattista, Betty Richardson, Robert Richardson
Posted Date:
Students also viewed these physics questions
-
(a) What force should the woman in Figure 9.43 exert on the floor with each hand to do a push-up? Assume that she moves up at a constant speed. (b) The triceps muscle at the back of her upper arm has...
-
Rio Tinto is a listed company in the mining and metals production industry. Some information drawn from its 2020 annual report is shown below. Safety and health performance 2020 2019 2018 Fatalities...
-
The June 30, 2015, adjusted trial balance of Energized Espresso, Inc. is shown next. Requirements 1. Prepare the June closing entries for Energized Espresso, Inc. 2. Calculate the ending balance in...
-
A commentator on a financial talk show on TV says that On average, firms pay out too little to stockholders. This is why stock prices go up with dividend increases and down with dividend decreases. ...
-
The following scalar field is given: \(V(x, y, z)=2 x^{2}+x y z+y\). Verify that Schwarz's theorem is satisfied. Schwarz's theorem: Mention should now be made of an important theorem of Mathematical...
-
Bob Royce incorporated Royce Consulting, an accounting practice, on May 1, 2014. During the first month of operations, these events and transactions occurred. May 1 Stockholders invested $100,000...
-
All work must be shown on every facet of the solution. This includes a timeline with cashflows, timing and rates clearly laid out and formulas (in pure form, not in the calculator or excel form). A...
-
5. Below are the scores on a high school marketing competition, ranked from lowest to highest. 5 11 13 14 16 17 18 8 9 11 a) Determine the mean, median, and mode. (K/U - 4 marks) 19 b) Mary's score...
-
The Nelson Company has $1,590,000 in current assets and $530,000 in current liabilities. Its initial inventory level is $390,000, and it will raise funds as additional notes payable and use them to...
-
You are an accountant who has prepared your neighbor's tax return as a favor and received no compensation. What documents must you file with the IRS to act as your neighbor's representative and to...
-
10. An investment grows from $3,000 to $6,000 in 6 years. At this rate, how long would it take to grow from $6,000 to $12,000 (in years) a. 12 b. 18 c. 6 d. 3
-
Property taxes 15,000 Utilities, factory 25,000 Indirect labor 45,000 Depreciation, factory 12,500 Insurance, factory 4,500 Work in Process Direct Materials 16,000 Direct Labor 20,000 Overhead...
-
How does the organization ensure transparency in the budget development, accounting, and reporting processes? How are the proposed budgetary expenses aligned with the organization's desired outcomes?...
-
Two pounds of raw materials are needed to produce one product. The desired ending balance of raw materials is 10% of the of the next month's production needs. (Refer to your answer in Activity Sheet...
-
1. Following are information about Alhadaf Co. Cost incurred Inventory Purchases Sales Adverting expense Salary Expense Depreciation Beginning Inventory Ending Inventory Amount 118,000 350.000 90,000...
-
A solenoid with a radius of 8.0103 m and 200 turns / cm is used as an inductor in a circuit. When the solenoid is connected to a source of 15 V rms at 22 kHz, an rms current of 3.5 102 A is...
-
An ideal monatomic gas is taken through the cycle in the PV diagram. (a) If there are 0.0200 mol of this gas, what are the temperature and pressure at point C? (b) What is the change in internal...
-
Light of wavelength 0.500 m (in air) enters the water in a swimming pool. The speed of light in water is 0.750 times the speed in air. What is the wavelength of the light in water?
-
Suppose that a speculative-grade bond issuer announces, just before bond markets open, that it will default on an upcoming interest payment. In the announcement, the issuer confirms various reports...
-
The expected effect on market efficiency of opening a securities market to trading by foreigners would be to: A. Decrease market efficiency. B. Leave market efficiency unchanged. C. Increase market...
-
1. An analyst estimates that a securitys intrinsic value is lower than its market value. The security appears to be: A. Undervalued. B. Fairly valued. C. Overvalued. 2. A market in which assets...
Study smarter with the SolutionInn App