Physics

posted by .

Consider holding a carton of milk in your hand. The force of the bicep muscle actsat an angle of 15 degrees to the vertical, while the weight of the arm and the milk both act downwards. The distance from the elbow to where the bicep muscle is attached via the distal bicep tendons to the radius and ulna bones is 5 cm. the distance from the elbow to the hand, holding the milk, is 35 cm. the forearm has a mass of 4 kg and the milk carton a mass of 2 kg. Assuming the forearm is kept perfectly horizontal, find the tension in the bicep muscle. As a function of the angle of the forearm with respect to the horizontal direction ( as the forearm is lowered) calculate the tension in the bicep muscle. Include a plot of tension in the bicep as a function of the angle of the forearm relative to the horizontal

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    If you are holding a dumbbell in your hand, there are three forces acting, Weight of the arm pulling the arm down, a tension force that the muscle in the shoulder exerts on the arm, and the force that the dumbbell exerts on the fist.. …
  2. college physics

    A cook holds a 1.90 kg carton of milk at arm's length. What force B must be exerted by the biceps muscle?
  3. physics

    hey, i was wondering if someone could explain and help me with this problems. please and thank you! A person holds an object of mass m = 4 kg on the palm of the hand with the arm stretched as shown in the attached figure. Use the torque …
  4. English

    1. There are a lot of empty milk packs which we can recycle. 2. There are a lot of empty milk cartons which we can recycle. (Are both the same?
  5. Math

    Justine measures the milk in two different cartons. One carton contains 1 liter and 665 milliliters of whole milk, and the other carton contains 1 liter and 183 milliliters of chocolate milk. How much more whole milk is there than …
  6. physics

    A cook holds a 2.66-kg carton of milk at arm's length (see the figure below). What force B must be exerted by the biceps muscle?
  7. biomechanics

    When a weight-lifter lifts a weight equal to his upper body weight his trunk makes an angle of 40 degrees, with the vertical, as shown in the diagram below. In this position the erector spinae muscles exert a large force on the sacrum …
  8. Physics

    Consider holding a carton of milk in your hand. The force of the bicep muscle actsat an angle of 15 degrees to the vertical, while the weight of the arm and the milk both act downwards. The distance from the elbow to where the bicep …
  9. PHYSICS

    Consider holding a carton of milk in your hand, as shown in the image. The force of the bicep muscle acts at an angle of 15 o to the vertical, while the weight of the arm and the milk both act downwards. The distance from the elbow …
  10. Physics (Torque)

    Your hand holds a litter of milk while your arm is bent at the elbow in a 90 degree angle. Estimate the torque caused by the milk on your arm about the elbow joint. Indicate all numbers used in your calculations.

More Similar Questions