Quadrice ps tendon Femur Patella e = 42° Patella tendon Tibia FIGURE P5.5

Q: If you hold your arm outstretched with palm upward, as shown, the force to keep your arm from…

A: a) Sum of moment about '0' is zero .   ΣMo=0   F sin 150.17-4x9.81x0.38=0…

Q: Q3. In the figure below, one end of the uniform beam of mass 50 kg is hinged to a wall. The other…

A: Given:-               Beam mass = m = 50 kg                   Box mass = m' = 10 kg…

Q: With the shoulder flexed at 30 degrees, the moment arm of the deltoid muscle is 1.8 cm. Solve for…

A: Given: shoulder is flexed at an angle, θ=30° moment arm of deltoid muscle, 1.8 cm=0.018 m Weight of…

Q: A person is standing on a level floor. His head, upper torso, arms, and hands together weigh 471 N…

A:

Q: A 175.8-N bird feeder is supported by three cables as shown in the figure below. Find the tension in…

A:

Q: Is the object in equilibrium? A. yes, all forces are balanced B. yes, all forces are not balanced…

A:

Q: A 3.0-m-long rigid beam with a mass 140 kg is supported at each end. An 85 kg student stands 2.0 m…

A:

Q: The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle…

A: By Balancing torque about elbow joint

Q: A uniform beam of length L and mass M has its lower end pivoted at P on the floor, making an angle θ…

A: Given that: To determine: a) Write an expression for the y-component Py of the force exerted by the…

Q: In an isometric exercise a person places a hand on a scale and pushes vertically downward, keeping…

A:

Q: Given that the weight of the lower arm is Mg = 16.0 N , and that the force meter reads F = 87.0 N ,…

A: Net torque acting about the axis is zero at equilibrium. Therefore,

Q: To pull with a force F=172 N on the scale as shown, what should the tension in your biceps muscle…

A: The free-body diagram of the system is shown below.

Q: The chewing muscle, the masseter, is one of the strongest in the human body. It is attached to the…

A:

Q: A bowler holds a bowling ball (M = 6.9 kg) in the palm of his hand (see the figure below). His upper…

A: Given: M =6.9 kgm =2.1 kgd =4.0 cm =0.04 mD = 15 cm =0.15 mL =33 cm =0.33 m

Q: multiple choice) Muscles of the human body must pull several hundred Newtons of force to effect…

A: Muscles have very small cross section areas  And torque is force x distance

Q: Scientists have studied how snakes grip and climb ropes. In one study, they found that an important…

A: Let us look at the upper node. The tension everywhere in the rope supporting mass M be T3=mg. This…

Q: 2. A 10 m long uniform bridge has a mass of 1200kg and is supported by two posts that are 1m in from…

A:

Q: A mobile is shown in the figure. The horizontal supports have negligible mass. Assume that all the…

A: The unknown weight hanging at the left side of 5g can be obtained as Now, the weight hanging just…

Q: The chewing muscle, the masseter, is one of the strongest in the human body. It is attached to the…

A: Given, force, F = 50.6 N The formula for torque: torque=moment arm×force Applying net torque τ…

Q: A baseball bat has a thick, heavy barrel and a thin, light handle. If you want to hold a baseball…

A: We know that the rotational inertia is a measure of resistance to the change in the rate of rotation…

Q: When a gymnast weighing 740 N executes the iron cross as in figure (a), the primary muscles involved…

A: Write the forces and their components.

Q: A person who weighs 790 N Supports himselt on the ball of one foot The the foot on one side of the…

A:

Q: Unlike most of the other muscles in our bodies, the masseter muscle in the jaw, as illustrated in…

A:

Q: The arm shown in the figure 5. supports a 4kg sphere. The mass of the hand and forearm together is…

A:

Q: The upper leg muscle (quadriceps) exerts a force of FQ = 1140 N, which is carried by a tendon over…

A: It is given that,

Q: What will happen when the supports are removed from this system? kg kg 1.75 1.5 1.25 1 0.75 0.5…

A:

Q: The femur of a human leg (mass 10 kg, length 0.9 m) is in traction, as shown in the figure. The…

A:

Q: ould therefore exert a force to keep the head erect. That is why your head falls forward when you…

A: Solution: Given that  w = 55 N, r1 = 4.8 cm, and r2 = 2.9 cm.) magnitude N direction (upward,…

Q: Q9 The system in the figure is in equilibrium. A concrete block of mass 287 kg hangs from the end of…

A: GIVEN: mass of the concrete block M = 287kg mass of strut m= 33.6kg

Q: The length of the Achilles tendon increases 0.500 cm when the force exerted on it by the muscle…

A: increase in length = ∆x = 0.5 cm = 0.005 m increase in force = ∆F= 4769 - 3198 = 1571 N

Q: A 50 N hand and forearm are held at a 35° angle to the vertically oriented humerus. The CG of the…

A: In the given question We have to determine the force must the forearm flexors exert if a 50 N weight…

Q: A uniform beam of length L and mass M has its lower end pivoted at P on the floor, making an angle θ…

A: (a)Draw the free body diagram of the beam.

Q: The upper leg muscle (quadriceps) exerts a force of FQ = 1140 N, which is carried by a tendon over…

A: The free body diagram is shown as,

Q: 4. The hanging mobile pictured above consists of two masses, m1 and m2, suspended from a uniform 10…

A:

Q: A person is standing on a level floor. His head, upper torso, arms, and hands together weigh 438 N…

A:

Q: Scientists have studied how snakes grip and climb ropes. In one study, they found that an important…

A: a) Analyze the following diagram. Applying Newton’s second law on the rope in the vertical…

Q: When you bend over, a series of large muscles, the erector spinae, pull on your spine to hold you…

A: Given data γ=300 θ=120 wh=160 N wT=320 N

Q: When you carry shopping bags, rather than grasp the handles with your hand as in Q8.14a, you might…

A: For a given set of grocery bags the torque they produce about a person's elbow will be larger the…

Q: A person supports himself on the ball of one foot. The normal force N=724 N pushes up on the ball of…

A:

Q: What will happen when the supports are removed from this system? 20 kg 30 kg 1.75 1.5 1.25 0.75 0.5…

A:

Q: A 2.0-m-long rod has a density in kilograms per meter A 1.0 kg/m, b = 1.0 k9/m² , and x is the…

A: Given, λ=a+bx, where a=1 kg and b=1.0 kg/m2  =1+xL=2.0 m Solution distance dx from the left end of…

Q: 00 With the shoulder flexed at 30°, the moment arm of the deltoid muscle is 2.0 cm. Solve for the…

A: Given,  Weight of humerus = 48N Shoulder is flexed at 30 degree Moment arm of the deltoid muscle is…

Q: Calculate the force the biceps muscle must exert to hold the forearm and its load as shown in…

A: The toque due to weights are clockwise relative to the pivot, while the torque created by the biceps…

Q: Calculate the force the must exert to hold the forearm and its load as shown in the Figure N.m 480…

A: Given : r1 = 4 cm = 0.04 m r2 = 16 cm = 0.16 m r3 = 38 cm = 0.38 m ma = 2.5 kg mb = 4 kg

Q: A horizontal uniform plank is supported by ropes I and II at points P and Q, respectively, as shown…

A: In this case, there are three forces on the plank.   The force T1 and T2 are pulling up respectively…

Q: A scaffold of mass 79 kg and length 5.0 m is supported in a horizontal position by a vertical cable…

A:

Q: To pull with a force F=160 N on the scale as shown, what should the tension in your biceps muscle…

A:

Q: A father lifts his child as shown in Figure shown. What force should the upper leg muscle exert to…

A: Suppose the father lifts the child and according to the figure we have certain values as written…

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.