Question

During a the bicep curl exercise, the moment arm of the force applied about the elbow joint is largest when the angle at the elbow joint is approximately?

Answer #1

It was a pleasure answering your questions. Hope this
helps...

Feel free to revert back if have any doubt or query.

Best wishes!!

Your athlete is performing a dumbbell biceps curl. During the
concentric phase of this exercise, at a constant speed, the athlete
realizes that the exercise is easy at the beginning (elbow fully
extended), more difficult in the middle (at 90 degrees of elbow
flexion) and easy again at the end (at 135 degrees of elbow
flexion). Explain why the athlete feels differences in external
resistance during the concentric phase. If the client performed the
same exercise with more speed, how...

Suppose the distance between the elbow joint and the point where
the tendon from the biceps attaches to the bone is 5 cm. Suppose
also that the angle that the tendon makes with the bone is 80°. The
arm has a mass of 2.0 kg and its center of mass is 15 cm from the
elbow joint. If a 5.0 kg mass is in the hand, 40 cm from the elbow
joint, what is the tension in the biceps muscle?...

If I hold a weight activating only my biceps it takes 500N of
force. My elbow is at 120°. My biceps inserts 5 cm away from the
elbow and has a line of action that is directed at 100°. If I hold
the weight activating only my brachialis it takes 700N of force.
How large is the moment arm of the brachialis?

The combination of an applied force and a constant frictional
force produces a constant total torque of 35.8 N·m on a wheel
rotating about a fixed axis. The applied force acts for 6.04 s.
During this time the angular speed of the wheel increases from 0 to
10.2 rad/s. The applied force is then removed, and the wheel comes
to rest in 59.7 s.
(a) Find the moment of inertia of the wheel.
_______ kg

The combination of an applied force and a friction force
produces a constant total torque of 35.9 N · m on a wheel rotating
about a fixed axis. The applied force acts for 6.20 s. During this
time, the angular speed of the wheel increases from 0 to 9.6 rad/s.
The applied force is then removed, and the wheel comes to rest in
60.5 s.
(a) Find the moment of inertia of the wheel.
kg · m2
(b) Find the...

At push-off phase during walking, the anterior/posterior ground
reaction force at the center of pressure is 157 N and the vertical
ground reaction force under the right foot is 293 N. The foot has a
length of 0.3 m and is 33 degrees above the ground. The center of
pressure is located under the metatarsal heads.
Calculate the moment arm for the anterior/posterior ground reaction
force. (m)
Calculate the moment arm for the vertical ground reaction force.
(m)
Calculate the...

1) The combination of an applied force and a friction force
produces a constant total torque of 35.8 N · m on a wheel rotating
about a fixed axis. The applied force acts for 5.90 s. During this
time, the angular speed of the wheel increases from 0 to 10.1
rad/s. The applied force is then removed, and the wheel comes to
rest in 60.1 s.
(a) Find the moment of inertia of the wheel.
kg · m2
(b) Find...

10) When the moment of inertia is very large,
what does this mean about the rotational kinetic
energy of a rigid body?
11)Lever Arm or moment arm, Line of
Action are taken into consideration when trying to
determine what?
12)An object that can be deformed and returned to its original
shape is said to be?
PLEASE TYPE THE ANSWERS

Determine the amount of torque that is needed to hold up a
weight with the arm at shoulder level. Draw a free body diagram to
represent it. Assume the following and show all work:
Weight that is being held= 12 lbs
Center of mass of the limb = 26 cm from shoulder joint
Weight of limb= 8.5 lbs
Angle of insertion of the deltoid is 15 degrees. Moment arm is 3
cm.
Length of the limb = 65 cm
Weight...

In a scenario where the angle of applied force is not 90 degree
to the lever arm, consider the following as a practical safety
application of rotational equilibrium: a ladder (5m long, weighting
200N) rests on a wall the ladder is tilted such that its center of
mass is 3m vertically above the ground. There is no friction on the
wall, but there is a coefficient of static friction along of the
ground of 0.3. How far along the ladder...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 14 minutes ago

asked 20 minutes ago

asked 27 minutes ago

asked 28 minutes ago

asked 31 minutes ago

asked 31 minutes ago

asked 35 minutes ago

asked 35 minutes ago

asked 39 minutes ago

asked 39 minutes ago

asked 41 minutes ago

asked 42 minutes ago