Calculate the magnitude of the moment produced by the dumbbell at the shoulder in each shoulder...
Calculate the magnitude of the moment produced by the dumbbell at the shoulder in each shoulder position and identify the direction. 5 kg dumbbell moment arm = 20 cm 45 degree angles a) shoulder forward flexion b) shoulder abduction c) shoulder extension
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Calculate the magnitude of the moment produced by the dumbbell
at the shoulder in each shoulder...
We wish to determine the moment at the shoulder that is required to perform the arm...
We wish to determine the moment at the shoulder that is required to perform the arm motion (shoulder abduction) depicted in Figure 3 below. This motion may be modelled with a simple, single- element linkage system as shown in the figure. The shoulder joint is represented by a simple pin support centred at O. The arm and the carried weight are represented as a rigid body consisting of a rod and a cuboid. In the rigid body model, the length...
3. Leighton is attempting a biceps curl with a 10 kg dumbbell. She is standing upright,...
3. Leighton is attempting a biceps curl with a 10 kg dumbbell. She is standing upright, and her forearm is horizontal. The moment arm of the dumbbell about Leighton's elbow joint is 28.5 cm a What torque is created by the dumbbell about the elbow joint? b. What torque is created by Leighton's elbow flexor muscles to hold the dumbbell in this position? Ignore the weight of her arm and hand. C. If the elbow flexor muscles contract with a...
1. (30 points) You are modeling the biceps of a new life-like robot you are designing. The geomet...
1. (30 points) You are modeling the biceps of a new life-like robot you are designing. The geometry of the arm has been defined as follow: Di - 5 cm, D2- 15 cm, D325 cm and D4- 18.66 cm (distances in the diagram are shown for the elbow positioned at 90°). The dumbbell weighs 7 kg and the weight of the forearm is 2 kg. (F - ma) a. Plot the moment arm values as a function of the angle...
biceps 2) Suppose that the dumbbell has a mass of 10.0 kg (so its weight equals...
biceps 2) Suppose that the dumbbell has a mass of 10.0 kg (so its weight equals 98.0 N) and the arm that holds it has a mass of 2.2 kg (with a weight of 21.6 N). The weight acts 3.0 cm from the elbow joint and we can think of all of the mass of the arm as at a distance of 14.0 cm from the elbow. Find the force in the biceps muscle if it attaches 3.1 cm from...
We Part (a) [2 marks] The angular displacement of the rigid body ranges from θ =...
We
Part (a) [2 marks]
The angular displacement of the rigid body ranges from
θ = 0° (the vertical as shown in the figure) to θ
= 135° and can be modelled using simple harmonic motion. Assuming a
rate of 20 [reps/min], write down an expression for angular
displacement, θ [rad] as a function of time, t [s]. You may assume
that the motion starts with an angular displacement of 135°.
Hint: The angular displacement, θ can be expressed as...
9. In the following sketch, a spring is oscillating back and forth with negligible friction. Label...
9. In the following sketch, a spring is oscillating back and forth with negligible friction. Label with the corresponding letter the Maximum kinetic energy (A), the maximum force (B), the maximum spring potential energy (C), and maximum velocity (D). You can sketch the image below on your paper or print it out !x=0 beee I eeeeeeto ere fecreto 10. You decide to bungee jump from a tall bridge, 100 m tall. Your mass is 70 kg. The relaxed length of...
4-47. Determine the magnitude of the moment of each of the three forces about the axis...
4-47. Determine the magnitude of the moment of each of the three forces about the axis AB. Solve the problem (a) using a Cartesian vector approach and (b) using a scalar approach. IF 0N 25 N F -45 N SOLUTION a) Vector Analysis Position Vector and Force Vector: 1- {-1.5j} m - - 0 F:- {-60k}N F. - {8Si) N Unir Vector Along AB Aris: (2-0)i + (0 - 1.5) * V(2 - 0) + (0 - 15) F -...
Calculate the magnitude and direction of the Coulomb force on each of the three charges shown...
Calculate the magnitude and direction of the Coulomb force on each of the three charges shown in the figure below. 6.00 μC 1.50 ,C -2.00 μC 3.00 cm 2.00 cm 6.00 HC charge magnitude 6.00 HC charge direction select B 1.50 HC charge magnitude 1.50 uC charge direction elect. -2.00 HC charge magnitude 2.00 HC charge direction Need Help? Read It 5 -Select--
Name: 5. Mackenzie, your favorite contestant on a popular last-chance your favorite contestant on a popular...
Name: 5. Mackenzie, your favorite contestant on a popular last-chance your favorite contestant on a popular weight loss TV show, is in a assists ber image below) at 90 degrees of elbow flexion. Her trainer s hand to support the weight until Mackenzie is ready to hold it all ht while being on the show, you can ignore the mass of her arm workout with her trainer. She is in her right hand (see attempting to hold a 15kg dumbbell...
Calculate the total torque (magnitude and direction) for each of the following cases shown below. You can assume the "b...
Calculate the total torque (magnitude and direction) for each of
the following cases shown below. You can assume the "bar" the
masses are attached to is massless. The top point of the triangle
represents the pivot point for the system. Be sure to include the
magnitude and the direction.
Calculate the total torque (magnitude and direction) for each of the following cases shown below. You can assume the bar the masses are attached to is massless. The top point of...
We wish to determine the moment at the shoulder that is required to perform the arm motion (shoulder abduction) depicted in Figure 3 below. This motion may be modelled with a simple, single- element linkage system as shown in the figure. The shoulder joint is represented by a simple pin support centred at O. The arm and the carried weight are represented as a rigid body consisting of a rod and a cuboid. In the rigid body model, the length...
3. Leighton is attempting a biceps curl with a 10 kg dumbbell. She is standing upright, and her forearm is horizontal. The moment arm of the dumbbell about Leighton's elbow joint is 28.5 cm a What torque is created by the dumbbell about the elbow joint? b. What torque is created by Leighton's elbow flexor muscles to hold the dumbbell in this position? Ignore the weight of her arm and hand. C. If the elbow flexor muscles contract with a...
1. (30 points) You are modeling the biceps of a new life-like robot you are designing. The geometry of the arm has been defined as follow: Di - 5 cm, D2- 15 cm, D325 cm and D4- 18.66 cm (distances in the diagram are shown for the elbow positioned at 90°). The dumbbell weighs 7 kg and the weight of the forearm is 2 kg. (F - ma) a. Plot the moment arm values as a function of the angle...
biceps 2) Suppose that the dumbbell has a mass of 10.0 kg (so its weight equals 98.0 N) and the arm that holds it has a mass of 2.2 kg (with a weight of 21.6 N). The weight acts 3.0 cm from the elbow joint and we can think of all of the mass of the arm as at a distance of 14.0 cm from the elbow. Find the force in the biceps muscle if it attaches 3.1 cm from...
We
Part (a) [2 marks]
The angular displacement of the rigid body ranges from
θ = 0° (the vertical as shown in the figure) to θ
= 135° and can be modelled using simple harmonic motion. Assuming a
rate of 20 [reps/min], write down an expression for angular
displacement, θ [rad] as a function of time, t [s]. You may assume
that the motion starts with an angular displacement of 135°.
Hint: The angular displacement, θ can be expressed as...
9. In the following sketch, a spring is oscillating back and forth with negligible friction. Label with the corresponding letter the Maximum kinetic energy (A), the maximum force (B), the maximum spring potential energy (C), and maximum velocity (D). You can sketch the image below on your paper or print it out !x=0 beee I eeeeeeto ere fecreto 10. You decide to bungee jump from a tall bridge, 100 m tall. Your mass is 70 kg. The relaxed length of...
4-47. Determine the magnitude of the moment of each of the three forces about the axis AB. Solve the problem (a) using a Cartesian vector approach and (b) using a scalar approach. IF 0N 25 N F -45 N SOLUTION a) Vector Analysis Position Vector and Force Vector: 1- {-1.5j} m - - 0 F:- {-60k}N F. - {8Si) N Unir Vector Along AB Aris: (2-0)i + (0 - 1.5) * V(2 - 0) + (0 - 15) F -...
Calculate the magnitude and direction of the Coulomb force on each of the three charges shown in the figure below. 6.00 μC 1.50 ,C -2.00 μC 3.00 cm 2.00 cm 6.00 HC charge magnitude 6.00 HC charge direction select B 1.50 HC charge magnitude 1.50 uC charge direction elect. -2.00 HC charge magnitude 2.00 HC charge direction Need Help? Read It 5 -Select--
Name: 5. Mackenzie, your favorite contestant on a popular last-chance your favorite contestant on a popular weight loss TV show, is in a assists ber image below) at 90 degrees of elbow flexion. Her trainer s hand to support the weight until Mackenzie is ready to hold it all ht while being on the show, you can ignore the mass of her arm workout with her trainer. She is in her right hand (see attempting to hold a 15kg dumbbell...
Calculate the total torque (magnitude and direction) for each of
the following cases shown below. You can assume the "bar" the
masses are attached to is massless. The top point of the triangle
represents the pivot point for the system. Be sure to include the
magnitude and the direction.
Calculate the total torque (magnitude and direction) for each of the following cases shown below. You can assume the bar the masses are attached to is massless. The top point of...
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