E) If the arm only weighs 41.5 N, why are F, and F, so much larger? Is there a conceptual reason that the forces on the muscles and bones are so much larger than the force of gravity?
Q: 2. A pachyderm stands near the end of a beam contemplating the nuances of the plotline of the last…
A:
Q: Estimate the magnitude of the normal force acting on an apple that rests on a flat surface.…
A: Normal force is a contact force acting as reaction…
Q: 13.) A 74.4 kg man stands on his toes by exerting an upward force through the Achilles tendon, as…
A: Step 1:Step 2:
Q: A.| A family of four with a total mass of 350 kg steps into a 1350 kg car, and the springs compress…
A:
Q: A 0.102 kg remote control 24.0 cm long rests on a table, as shown in the figure(Figure 1), with a…
A: Given:- The mass of the m = 0.102 kg The remote control h= 24.0 cm = 0.24 m The power button on…
Q: The man is supporting his weight with friction. He's pressing into the rock walls with his feet and…
A: This is a question regarding friction and the balancing of forces. The formula to calculate the…
Q: Verify that the force in the elbow joint in the figure below is 407 N, as stated in the text.…
A:
Q: The biceps muscle exerts a muscle force of 1000N on the forearm, as per below. The muscle force acts…
A: Magnitude of muscle force F=1000N Angle made by muscle force with forearm = 300 Hence angle made by…
Q: The forearm in the figure accelerates a 3.5-kg ball at 6.0 m/s² by means of the triceps muscle, as…
A: Given- mass of ball , mb= 3.5 kg acceleration of ball , a = 6.0 m/s2 perpendicular distance of ball…
Q: When just a single force is present, can an item be in equilibrium? Explain.
A: Equilibrium system.
Q: The soles of a popular make of running shoe have a force constant of 2.2x10° N/m . Treat the soles…
A: Given: Force constant (k) = 2.2 * 105 N/m Mass(M) = 62kg
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: 8. You're on your roof repairing a rot spot. You have a mass of 120 kg. μs between your shoes and…
A: Coefficient of friction between shoes and the roof shingles u = 0.66
Q: 17. An 100 kg block dangles from the knot formed by 2 strings suspended from the ceiling at angle of…
A:
Q: The centers of gravity of the three trucks parked on a hill are shown by the star. Which truck will…
A: The normal force and frictional force acting on all the three trucks will be the same.The position…
Q: To determine the force a person's triceps muscle can exert, a doctor uses the procedure shown in the…
A: Given, The weight of the lower arm, Mg=15.7N The meter reads the force, F=90N Distance of the weight…
Q: Explain one of the reasons why pregnant women often suffer from back strain late in their pregnancy.
A: Pregnant women often suffer from back strain late in their pregnancy because they lift their child…
Q: 4. The Achilles tendon experiences an upward pull from two muscles situated at the back of the leg,…
A:
Q: You are holding a meterstick of 0.23 kg horizontally in one hand. Assume that your hand is wrapped…
A:
Q: ⦁ Imagine that you hold a 6.0kg lead ball in your hand with your arm bent. The ball is 0.35m from…
A: Given that the value of mass of the ball and distance of the ball and distance of biceps muscle and…
Q: During the downward portion of a biceps curl the velocity of the dumbbell is held constant. If the…
A:
Q: Figure FM 15 -12 cm-- 24 cm- 1 of 1 Calculate the magnitude of the force, FM. required of the…
A:
Q: Estimate the magnitude of the normal force ?n acting on an apple that rests on a flat surface.…
A: An average apple has a mass of 100 grams. The normal force acting on an apple that rests on a flat…
Q: A toy mobile is built like the one shown below. Object A has a 0.5-kg mass. What should be the mass…
A: We just have to balance this toy mobile to determine mass of B,we need to balance forces and torques…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- 1) A toy mobile is built like the one shown below. B 2 3 1 2 1 1 Object A has a 1.0-kg mass. What should be the mass of object B? The numbers indicate the relative lengths of the rods on each side of their supporting cords.12. During a wrestling match, a 158 kg wrestler briefly stands on one hand during a maneuver designed to perplex his already moribund adversary. By how much (in m) does the upper arm bone shorten in length? The bone can be represented by a uniform rod 36.0 cm in length and 1.9 cm in radius. m Additional Materials Reading 13. When using a pencil eraser, you exert a vertical force of 9.00 N at a distance of 2.00 cm from the hardwood-eraser joint. The pencil is 6.00 mm in diameter and is held at an angle of 36.0° to the horizontal. (Enter your answers in m.) (a) By how much does the wood flex perpendicular to its length? m (b) How much is it compressed lengthwise? mWhen just a single force is present, can an item be in equilibrium? Explain.
- 1. During a circus act, one performer swings upside down hanging from a trapeze holding another, also upside-down, performer by the legs. If the upward force on the lower performer is three times their weight, how much do the bones (the femurs) in their upper legs stretch? You may assume each is equivalent to a uniform rod 35.0 cm long and 1.80 cm in radius. Her mass is 59.0 kg. The Young's modulus for bones is 1.6 x 10¹⁰ N/m². Think & Prepare 1. For this problem, assume that the leg bones are uniform rods. 2. What kind of stress does the legs of the trapeze artist experience? Tensile, compressive or shear stress? How will you fund the cross-sectional area of the bone? 3. What type of elastic modulus is appropriate for this problem? 4. If the total upward force on the artist is given, what is the force on each leg? Enter to 3 significant figures Amount by which the femurs stretch = 0.381 cm Reflect: Is this stretch large or small? Compare it to the length of the leg.When just a single force is present, can an item be in equilibrium? Explain.A 2.0-m-long rod has a density in kilograms per meter A = a + bx ,where a = 1.0 kg/m, b = 1.0 k9/m², and x is the distance from the left end of the rod. The rod rests horizontally with each end supported by a scale. The force exerted by the left scales is 39.2 N 22.9 N 16.3 N 4.0 N 32.6 N
- 4. When a person stands on tiptoe (a strenuous position), the position of the foot is as shown in the figure below (a). The total gravitational force on the body, ? ?, is supported by the force ? ⃗ exerted by the floor on the toes of one foot. A mechanical model of the situation is shown in the figure below (b), where ? ⃗ is the force exerted by the Achilles tendon on the foot and ? ⃗ is the force exerted by the tibia on the foot. Find the values of T, R, and ? when ? ? = ? = 700 N.4. A 3 kg meter stick has a fixed axis at the 15 cm mark. (a) Determine the magnitude and direction of an upward vertical force at the 100 cm mark that will maintain the meter stick in a horizontal equilibrium position. (b) Determine the reaction force exerted by the axis.