Question: 2. Leigh is doing a knee extension exercise using a 100 N weight strapped to her ankle 40 cm from her knee joint. She holds

2. Leigh is doing a knee extension exercise using a 100

2. Leigh is doing a knee extension exercise using a 100 N weight strapped to her ankle 40 cm from her knee joint. She holds her leg so that the horizontal distance from her knee joint to the weight is 30 cm. a. For this position, what torque is created by the dumbbell about her knee joint axis? b. If the moment arm of the knee extensor muscles is 4 cm about the knee joint axis, what amount of force must these muscles produce to hold the leg in the position described? Ignore the weight of the leg. 40 cm 30 cm

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Physics Questions!

1 . Captain America is doing a knee extension exercise using a 1 5 0 N weight strapped to his ankle 4 0 cm from his knee joint ( shield gets heavy, got to get some swole legs to hold it up ) . He...

First of all, I don't need reference. SO PLZ DON'T ASK THE REF PLZZZZZ. I just wanna know where should I change and do better then write it. I won't just send your answer. Just for learning. I...

Select a physical activity ( e.g,. a dance step, an exercise, a sports activity, etc.) and as the title of your Project . You may select any activity that has NOT been analyzed in another assignment...

From Khoo: The degree of spasticity in patients with neuromuscular disorders can be quantified with the use of the "pendulum test." In this clinical procedure, the subject sits relaxed on a table...

Chapter 4 - Work, Power and Energy 1. How much kinetic energy does a 2 kg discus have if its velocity is 20 m/s? 3. At the top of a giant swing on the gymnastics high bar, Candy's velocity is 1 m/s,...

A soccer goalkeeper takes a goal kick and the ball leaves his foot with a vertical velocity of 15 m/s and a horizontal velocity of 25 m/s. What is the resultant velocity of the ball? A soccer...

Please help me answer these questions! Please include an explanation and diagrams if possible. Thanks! PRACTICE PROBLEMS FOR CHAPTER 5 These practice problems are due by Thursday (4/14/22). Problems...

please read it and answer it completely Question 5 An athlete performs an isometric lmee extension exercise in a sitting position {upper leg fully supported by the chair} with an effective weight of...

Density SiriBFperc Over45 AbdomenC HipC ThighC WristC 1.0708 12.3 0 154.25 21.9 32 27.4 17.1 1.0853 6.1 0 173.25 23.4 30.5 28.9 18.2 1.0414 25.3 0 154 66.25 28.8 25.2 16.6 1.0751 10.4 0 184.75 22.8...

need help with these kinesiology questions. thank you! 1. The attach angle of elbow flexors is different when elbow is in different position. Assume the attached angle is a) 130 when elbow in 50...

The data selected for the comparative balance sheets of Kris Corporation for year 1 and year 2 are as follows: Year 1 year 2 Assets Money ps 100,000 ps (50,000) Accounts receivable (net) 50,000...

What is not a factor to consider when deciding whether zero base budgeting is the right approach for a particular organization?

Given the low-pass shown in fig 11PFE-5, find the half-power frequency and the gain of this circuit, if the source frequency is 8Hz. TPA

A social worker wants to study the impact of the instability of a childs home life on the childs academic performance. She defines instability as the number of homes that the child lives in during a...

1. The main purpose of organizing as a management function is to ____________. (a) make sure that results match plans (b) arrange people and resources to accomplish work (c) create enthusiasm for the...

Probability of fewer than 5 passengers who do not show up for a flight The given values are discrete. Use the continuity correction and describe the region of the normal distribution that corresponds...

The balance sheets for Plasma Screens Corporation, along with additional information, are provided below: Additional Information for 2021: 1. Net income is $79,000. 2. The company purchases $110,000...

Calculate takt time for the following information, in minutes. Show your work for full credit. (20 pts) - 1 shift is (8) hours - Each shift there are two (15) minute breaks - Production requirement...

15. Ask yourself the following questions: What do you want to remember from your everyday experiences? These are the experiences that fill most of your life. They may take 9099% of your time. What do...

What reward will you give yourself when you achieve this?

11. Now consider the different goals you have for your life in the future. See these goals in relation to your core values and your roles. How do goals affect your roles and your values? Development...