How much force must be exerted by the forearm flexors

Assignment Help Physics
Reference no: EM13266769

A 35 N hand and forearm are held at a 45 degree angle to the vertically oriented humerus. The CG of the forearm and hand is located at a distance of 15 cm from the joint center at the elbow, and the elbow flexor muscles attach at an average distance of 3 cm from the joint center. (Assume that the muscles attach at an angle of 45 degrees to the bones).

a.) how much force must be exerted by the forearm flexors to maintain this position?

b.) how much force must the forearm flexors exert if a 50 N weight is held in the hand at a distance along the arm of 25 cm?

Reference no: EM13266769

Questions Cloud

Estimate the focal length of the lens : In order to heighten your enjoyment of your 29-carat blue diamond, you view it through a lens held close to your right eye, estimate the focal length of the lens
Explain activation energies and energy changes : Based on their activation energies and energy changes and assuming that all collision factors are the same, which of the following reactions would be slowest in the forward direction
What is firm-specific risk : What is firm-specific risk? Should an investor expect to be compensated for firm-specific risk in an efficient capital market? Why or why not?
Count number of even elements of array of n 16-bit elements : Write a program to count the number of even elements of an array of N 16-bit elements. The array is stored at memory locations starting from $900. Use assembler
How much force must be exerted by the forearm flexors : A 35 N hand and forearm are held at a 45 degree angle to the vertically oriented humerus. how much force must be exerted by the forearm flexors to maintain this position
What is the bid-ask spread : What is the bid-ask spread? Would you expect it to be larger or smaller for more volatile stocks? Why?
Does this contradict with the beliefs of graham and buffet : Warren Buffett believes that "value will always in time be reflected in market price". Does this contradict with the beliefs of Graham and Buffet that you should always buy with a "margin of safety"? Explain.
Explain what was the initial temperature of the water : Water (2770 g) is heated until it just begins to boil. If the water absorbs 5.35 x 10^5 J of heat in the process, what was the initial temperature of the water
What is the ratio of the intensity of lights : A beam of initially unpolarized light passes through a sequence of three ideal polarizers. What is the ratio of the intensity of light

Reviews

Write a Review

Physics Questions & Answers

  What is the mass of the helium

A 10-cm-diameter cylinder of helium gas is 20 cm long and at 20°C. The pressure gauge reads 120 psi. how many helium atoms are in the cylinder? what is the mass of the helium?

  Find the time rocket reaches the peak height of trajectory

find the time rocket reaches the peak height of trajectory.

  What is the total biologically equivalent dose received

An unfortunate subject receives doses of the following types of radiation: ? rays (20 mrad, RBE=1), electrons (45 mrad, RBE=1),  What is the total biologically equivalent dose received

  Determine the speed of the resulting ball of clay

A 30.0g ball of clay traveling east at 1.00m/scollides and sticks together with a 30.0g ball of clay traveling north at 6.00m/s

  Calculate the wavelength

Calculate the wavelength ?1 for gamma rays of frequency f1 = 6.40×10^-14 Now express this gamma-ray wavelength in nanometers

  What is the total energy of the vibration

A 246 kg wooden raft floats on a lake. When a 80kg man stands on the raft, it sinks 4cm deeper into the water. When he steps off, the raft vibrates for a while.

  What is the fastest hunter swing his rock without breaking

An old hunting weapon was a rock on the end of a string. The hunter would swing the rock in horzontal circles and then throw it. If the rock had a mass of 2 kg and the 2 m long string breaks when the tension is 60N.

  Obtain the rise in its temperature

Multiple-Concept Example 1 discusses the concepts that are relevant to this problem. obtain the rise in its temperature

  Which experiences the greater gravitational force

An armadillo and Earth attract each other gravitationally. Which experiences the greater gravitational force, or do they experience the same force magnitude?

  Estimate the time the ball is in contact with the floor

Determine the magnitude and direction of impulse delivered to the ball by the floor.

  Find frequencies of vibration of the piano wire

find frequencies of vibration of the piano wire. Car 1 has 3 times the mass of car 2, but only 0.5 as much kinetic energy. What is the ratio between the speeds of the two cars (v1/v2)? You must type your answer as a numerical value.

  How much work is done per minute in lifting the water

A firefighter standing on a ladder 4.20 meters in the air is using a water hose to put out a fire. How much work is done per minute in lifting the water from the ground

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd