A hydraulic jack is used to lift a car in order to change a tire. The car exerts a force of 9,800 N toward the ground due to the force of gravity. To begin to lift the car, a hydraulic jack must produce v of force. of force. To keep the car in position once it is lifted, the jack must produce

Q: A man runs up a flight of 50 steps in 15 seconds. Calculate mass of man if the power output of his…

A: Introduction The BMI is a calculation based on a person's weight and height. The BMI is calculated…

Q: EMG signal to predicate the angle at the ankle joint

A: The human body hip joint angle as well as the surface electromyographic (sEMG) signals of the thigh…

Q: Keeping the object you are carrying close to your body reduces the force and stress on your spine.…

A: Keeping an object that we are getting close to the body reduces the force and stress on the spine .…

Q: When you exhale after taking a deep breath, your diaphragm pushes all the air out of your lungs.…

A: Newton's 3rd law of motion states that for every action there is equal and opposite reaction.  This…

Q: 38. Which of the following (are) is true when 50% of the motor units are stimulated?   A. the…

A: A motor unit is composed of a Motor neuron and the skeletal muscle fibers supplied (innervated) by…

Q: A weightlifter tries to lift a weight off the floor, but cannot upset it. Is the contraction: a)…

A: Muscles of the body help in the movement of the body of several types. there are different types of…

Q: 56. During the bench press, a lifter's foot may be either flat or on the toes and may change any…

A: The muscular system is an organ system consisting of skeletal, smooth, and cardiac muscle. It…

Q: A spring has a constant of 875 N/m. What hanging-mass will cause this spring to stretch 4.5 m?

A: Solution: consider a vertical spring of spring constant k on which we hang a mass m; it will stretch…

Q: There danger of automating the waste may happen in case of: Select one: Automate the process after…

A: SOLUTION The rising number of automated equipment has a significant impact on climate change. While…

Q: Military Chest Press Question 1 - For the exercise above, what movement is occurring at the…

A: Hello, thank you for your question, as per your policy we only answer 1 question each time. Please…

Q: Write a brief explanation of how, by calculating forces and torques in a physical system such as the…

A: Lifting Mechanicss During lifting of an heavy object spine has to support both the weight of the…

Q: If an athlete increases their strength capability by 15% and their body mass by 20%, their ability…

A: Muscle contraction Muscle contraction is defined as the shortening or stretching of muscles while…

Q: Calculate the total amount of work performed in 5 minutes of exercise on the cycle ergometer, given…

A: A cycle ergometer is a stationary exercise bicycle that is used to measure the energy and work of an…

Q: Discuss the advantages and disadvantages of each of the following types of strength measurement:…

A: Dynamic strength measurement: it's earlier referred to as Free-Weight strength testing. It measures…

Q: What do you mean by the process of response to gravity?

A: Gravity is a force of attraction exerted by the earth that pulls the objects towards it. Gravity…

Q: Discuss the advantages and disadvantages of each of the following types of strength measurement: (1)…

A: 1 and 2.  Dynamic strength estimation: It is prior called Free-Weight strength testing. It measures…

Q: Momentum is most directly dependent upon which two quantities? O weight and force O mass and…

A: Momentum is a property of a moving body that the body has by virtue of its mass and motion and…

Q: In EMG measurement what does needle electrode measure ? * The action of the muscle The action of the…

A: Electromyogram is used to diagnose the muscular disorders. Muscular disorder Primary function of…

Q: In a second-class lever, the effort a. is applied to the end opposite the fulcrum.b. is applied to…

A: As we know human body is made of skeleton. Skeleton is structure that keeps body in shape and helps…

Q: The data was collected at 100 frames/second. Calculate the velocity and acceleration for each of the…

A: Acceleration , velocity and position , Use of biomechanics -- Acceleration , velocity are very…

Q: (i) Identify the type of contraction in Figure 4. 17OMEGA ZKO 25 25 75 TOKYO 201 TPE Figure 4…

A: 1. Answer Concentric muscular contractions. A concentric muscle contraction is a type of muscle…

Q: Do the following mathematical calculations to figure out the work each hand did: Work = 1…

A: Introduction The relationship between two versions of a gene is referred to as dominant. Each parent…

Q: Which of the following vibrations are observed in IR spectroscopy? stretching O rotational O bending…

A: In IR spectroscopy, identification of chemical substances or functional group can be done  on the…

Q: How much tension must be developed by the erector spinae with a moment arm of 6 cm from the L5-S1…

A: Suppose, Segment consider as  S  Head (S1) , trunk (S2), arm (S3) and box (S4) Moment arm consider…

Q: Which is not a part of the sliding clamp loader? alpha beta gamma delta all of these choices are a…

A: Clamp loader proteins are DNA-dependent ATPases that use adenosine triphosphate as a source of…

Q: How many DOF do you have in your wrist and hand combined?The question must be answered by…

A: The three degrees of freedom of a wrist are shown in the figure drawn above. They are known as: 1.…

Q: 3. Which of the following forces is an at a distance force? O Friction O Normal O Applied O Gravity

A: At a distance forces are said to be those forces which acts even when two objects are not in any…

Q: With the shoulder flexed at 30°, the moment arm of the deltoid muscle is 2 for the force exerted by…

A:

Q: Which of the following is not an example of a general exercise? Squats for a tennis player Oblique…

A: The physical exercises employed in entire body fitness are known as general exercises. They have…

Q: 1. The use of biological materials to replace damaged parts of the human body must be compatible…

A: Note: since you have posted multiple questions, so we will be solving the first three for you. As…

Q: Four cars of different masses are moving on the same road at the same speed. The mass of each car is…

A: Answer: Option is Car C

Q: 1.   9 inches to cm 2.   5 feet 5 inches to cm 3.  5 feet 9 inches to meter 4.  99 kg to lbs 5.…

A: Conversion of one unit to another is like- 1 inch=2.5 cm 1feet=30 cm 1 meter=100 cm 1 kg=2.2 lbs

Q: With how much force would the 50 kg child pull the earth up by? 2

A: Force is defined as an external agent which is capable of changing the motion of the object when it…

Q: Motion can be described by all of the following except...

A: Motion is affected by momentum, inertia and the force applied on the object

Q: What is the myoelastic aerodynamic theory?

A: The myoelastic- aerodynamic theory of voice production holds that vocal fold oscillation is…

Q: An isometric exercise is one in which the joint angle does not change during the application of…

A: Muscles are part of the skeletal system in animals and humans. Muscle tissue is made up of Myocytes…

Q: Your 75-kg client has a VO2max of 3.9 L.min-1.  To exercise at 70% of capacity, what grade would be…

A: The maximum amount of oxygen that a human body can intake while performing exercises is termed as…

Q: 0.00 30 60 90 120 30 60 90 Knee flexion angle (deg) Knee flexion angle (deg) nowledge of…

A: Joint Mechanics -- The design of knee replacement has been a post hoc process . The total knee…

Q: e strongest force that caause plate movement is

A: Thermal convection is a force which is caused by the heat of the interior of the earth. Hot currents…

Q: . What is the MET level of Joan who runs at 5.1 mph, 2.7% grade? 2. Joan (in problem #1) lowers her…

A: MET is defined as the ratio of working metabolic rate upon resting metabolic rate. MET is a measure…

Q: Due to fiber alignment, the quadriceps muscle group is better at producing increased force, not…

A: Answer - True

Q: Potential energy is increased by increasing the height (increasing the gravitational potential ) and…

A: Energy is defined as the capacity of doing work .where it can be stored in different forms. Energy…

Q: Which of the following balances can measure down to 100 micrograms? O Triple-beam balance O…

A: Top-loading balance is a balance that does not have a draft shield, a protective cover around the…

Q: According to the free-body diagram, which forces act on both teams and rope before motion begins and…

A: A free-body diagram is a visual representation of the magnitude and direction of all forces on an…

Q: Given: Roller A is moving to the right at 3 m/s. B. ism 1.5 m Find: The velocity of B at the instant…

A: Given: Roller A is moving to the right at 3 m/s. We have to Find: The velocity of B at the instant 0…

Q: Consider your loved one* who comes close to you! Calculate the attractive forces between your bodies…

A: Massive forces attract each other due to gravitational forces. So the mass of the object increases…

Q: Acceleration %3D time taken final velocity-initial velocity Acceleration %3D time taken Vf-Vi a =

A: Acceleration is the rate of change of velocity. It means the rate of change of speed.

Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.