Question

A weightlifter is attempting a biceps curl with a 200 N barbell. The moment arm of...

A weightlifter is attempting a biceps curl with a 200 N barbell. The moment arm of the barbell about the elbow joint is 40 cm. What torque is created by the barbell about the elbow joint?

0 0
Add a comment Improve this question Transcribed image text
Answer #1

Force F = 200 N

distance r = 40 cm = 0.4 m

torque is created by the barbell about the elbow joint \tau = r*F

\tau = 0.4 m*200 N

= 80 N.m

Add a comment
Know the answer?
Add Answer to:
A weightlifter is attempting a biceps curl with a 200 N barbell. The moment arm of...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • 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...

  • Cole is attempting to lift 150 N. The moment arm of this weight about his elbow...

    Cole is attempting to lift 150 N. The moment arm of this weight about his elbow joint is 25 cm. The force generated by the elbow flexor muscles is 2000 N. The moment arm of the elbow flexor muscles is 2 cm. Is Cole able to lift the weight with this amount of force in his flexor muscles?

  • Dan's biceps muscle has a moment arm about the elbow joint of 0.011 m when the...

    Dan's biceps muscle has a moment arm about the elbow joint of 0.011 m when the joint is held at a joint angle of 90 degrees and can produce a force of 526 N. His forearm is 0.24 m from the elbow joint center to the center of his hand where he grips a handle. His forearm has a mass of 1.2 kg and the center of mass is located directly above the elbow joint. How much force can he...

  • The diagram above shows a side view of a person’s arm. The forearm and hand together...

    The diagram above shows a side view of a person’s arm. The forearm and hand together weigh 19N (WFH = 19N). The center of gravity at point T is located 24cm from the elbow joint. The person is holding a bowling ball 38cm from the elbow and the ball weighs 47N (WB = 47N). (a) Calculate the torque produced by the weight of the forearm and hand about the elbow joint. Include the direction of the torque. (b) Calculate the...

  • 2. Bill is holding a 12 kg barbell in his hand. His upper arm is perpendicular...

    2. Bill is holding a 12 kg barbell in his hand. His upper arm is perpendicular to the ground, and his elbow is flexed to produce a 40º angle at the elbow joint. His forearm has a mass of 12 kg. The distance from the elbow joint to the weight in his hand is 35 cm. The center of mass (COM) of his forearm is located 14 cm from the elbow joint. Draw a free body diagram of this scenario....

  • Question 3 10 points Save During a biceps curl exercise, the biceps generates 800 N of...

    Question 3 10 points Save During a biceps curl exercise, the biceps generates 800 N of force with a moment arm of 0.03 m. If the lever ar for the hand weight is 0.2 (i.e. d1) which of the following weights would result in an eccentric contraction? A. 200 N B. 120 N C. 100 N D.85 N

  • A load of 10 kg is held in one hand, with the lower arm horizontal. The...

    A load of 10 kg is held in one hand, with the lower arm horizontal. The lower arm has mass 1.5 kg The distance from the elbow to the hand is 30 cm and the COM can be assumed to be 40% of this distance (from E to H). a) What is the external static elbow moment? (31.2 Nm) b) If the biceps muscle acts with a perpendicular moment arm of 5cm, what force must it generate in order to...

  • 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...

  • Biceps For those of you who wonder, "Why do biology majors have to do all this...

    Biceps For those of you who wonder, "Why do biology majors have to do all this junk?" You hold a 1.80-N softball in your hand as shown in the figure. Consider your forearm and hand to be a uniform rod with a mass of 1.85 kg and the distance between the elbow joint and the ball in your hand is 2L = 24.4 cm. Your biceps exerts an upward force of 11.3 N on the forearm and is attached at...

  • To practice Problem-Soving Strabegy 8 1 Staic equlibrium problems When you in an object by moving only your torearm, the main ifting musdle in your arm is the biceps Suppose the mass of...

    To practice Problem-Soving Strabegy 8 1 Staic equlibrium problems When you in an object by moving only your torearm, the main ifting musdle in your arm is the biceps Suppose the mass of a fore arm is 150 kg If the biceps is connected to the fore arm a distanvce d 3.00 cm trom the elbow, how much force must the biceps exert to hold a 750 g ball at the end of Part F the forearm at distance d...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT