Question

Which class of lever will always represent the following: a muscle must exert more force than...

  1. Which class of lever will always represent the following: a muscle must exert more force than the force of resistance

    (weight lifted).

Science   Anatomy-And-Physiology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Class 3 lever always represent the muscle must exert more force than the force of resistance as weight lifting .

Because in this effort between the fulcrum and resistance. The resistance (or load) is on one side of the effort and the fulcrum is located on the other side.

In this scenario lfting the weight like a person produces a greater torque about the lower spine (pivot) – the lifting force is at a greater perpendicular distance to the pivot. The back muscles must exert a huge force to provide a torque that balances the torque from the weight being lifted.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
In a class 1 lever... The fulcrum is located between the effort force and load force...
In a class 1 lever... The fulcrum is located between the effort force and load force The load force is located between the fulcrum and the effort force The effort force is located between the fulcrum and the load force All of the above In a class 2 lever.... The fulcrum is located between the effort force and load force The load force is located between the fulcrum and the effort force The effort force is located between the fulcrum...
2.-Aristotle must exert a 160 N force to pull a wagon filled with wine jugs at...
2.-Aristotle must exert a 160 N force to pull a wagon filled with wine jugs at a constant velocity. The net force on the wagon is 3.Which of Newton's laws states that objects remain at rest, or moving with constant velocity unless acted on by a non-zero net force? 4.-With what force do you have to pull on a 10 kg wagon full of ducks to cause it to accelerate at 3 m/s2? Assume the force of friction is 10N....
Which of the following represent differences between cyanobacteria and plant cells? (may select more than one)...
Which of the following represent differences between cyanobacteria and plant cells? (may select more than one) a. Presence of ribosomes b. Presence of mitochondria c. The composition of the cell membrane d. Ability to photosynthesize e. Shape of DNA f. Presence of DNA g. Composition of the cell wall
1.Which of the following statements about the direction of a magnetic force is always true? (Note:...
1.Which of the following statements about the direction of a magnetic force is always true? (Note: More than one answer choice may be correct a. The direction of the magnetic force on a moving charged particle is perpendicular to the direction of the external magnetic field. b. The direction of the magnetic force on a moving charged particle is parallel to the direction of the charged particle's velocity. c. The direction of the magnetic force on a moving charged particle...
Smooth muscle differs from striated muscle in many ways. Which of the following statements about the...
Smooth muscle differs from striated muscle in many ways. Which of the following statements about the differences between smooth and striated muscle is NOT true? a. The sarcoplasmic reticulum is much more extensive in smooth muscle than in striated muscle b. Striated muscle cells organize their thick and thin filaments into sarcomeres, while smooth muscle cells scatter clusters of thick and thin filaments throughout the cytoplasm. c. Striated muscle cells anchor thin filaments to Z disks, while smooth muscle cells...
1. Which of the following statements about the direction of a magnetic force is always true?...
1. Which of the following statements about the direction of a magnetic force is always true? (Note: More than one answer choice may be correct) a)The direction of the magnetic force on a moving charged particle is parallel to the direction of the external magnetic field. b)The direction of the magnetic force on a moving charged particle is parallel to the direction of the charged particle's velocity. c)The direction of the magnetic force on a moving charged particle is perpendicular...
Altering the concentrations of which of the following ions will have an effect on muscle contraction?...
Altering the concentrations of which of the following ions will have an effect on muscle contraction? You may select more than one answer. Potassium Calcium Magnesium Sodium
Q1. Which of the following is a characteristic of a smooth muscle cell? Select one: a....
Q1. Which of the following is a characteristic of a smooth muscle cell? Select one: a. It has T tubules to bring action potentials into the cell b. It can be stimulated by hormones c. It is under the control of the somatic nervous system d. It relies on calcium which comes exclusively from the sarcoplasmic reticulum Q2. Which of the following tissues does NOT have nicotinic receptors? Select one: a. motor end plate in the neuromuscular junction b. adrenal...
Which ones of the following are properties of charged and neutral weak interactions? more than one...
Which ones of the following are properties of charged and neutral weak interactions? more than one answer 1 They are transmitted by vector bosons which can interact among themselves. 2 They are transmitted by heavy vector bosons. 3 They do not conserve the combined symmetry CP. 4 They always conserve parity. 5 They do not always conserve flavor.
There may be more than one correct answer, in which case, circle more than one answer!...
There may be more than one correct answer, in which case, circle more than one answer! These are worth 6 points each. (Each wrong answer = -2, minimum 0.) 9) Adding 10 to all numbers in a sample will always increase which of the following statistical measure(s)? a) p-value b) Mean c) Median d) Standard Deviation e) IQR f) correlation
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT