# phsyics

posted by .

A young girl sits at the edge of a dock by the bay, dipping her feet in the water. At the instant shown in the figure , she holds her lower leg stationary with her quadriceps muscle at an angle of 39 degree with respect to the horizontal.

Use the information given in the figure, plus the fact that her lower leg has a mass of 3.3 kg, to determine the magnitude of the force, F, exerted on the lower leg by the quadriceps.

• d -

ds

## Similar Questions

1. ### 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 …
2. ### Maths

a) A young man measuring 1.89 m. walks at a velocity of 1m/s towards a lamppost which its light is at 4m from the ground. At what velocity does the young man's shadow decrease when he's 10 m away from the lamppost?
3. ### Math3

a) A young man measuring 1.89 m. walks at a velocity of 1m/s towards a lamppost which its light is at 4m from the ground. At what velocity does the young man's shadow decrease when he's 10 m away from the lamppost?
4. ### Math3

a) A young man measuring 1.89 m. walks at a velocity of 1m/s towards a lamppost which its light is at 4m from the ground. At what velocity does the young man's shadow decrease when he's 10 m away from the lamppost?
5. ### physics

A child operating a radio-controlled model car on a dock accidentally steers it off the edge. The car's displacement 0.58 s after leaving the dock has a magnitude of 7.1 m. What is the car's speed at the instant it drives off the edge …
6. ### Physics

A child operating a radio-controlled model car on a dock accidentally steers it off the edge. The car's displacement 0.95 s after leaving the dock has a magnitude of 6.7 m. What is the car's speed at the instant it drives off the edge …
7. ### physics 1

A person is sitting with one leg outstretched and stationary, so that it makes an angle of 30.0° with the horizontal, as the drawing indicates. The weight of the leg below the knee is 50.5 N, with the center of gravity located below …
8. ### Physics

A soccer player extends her lower leg in a kicking motion by exerting a force with the muscle above the knee in the front of her leg. Suppose she produces an angular acceleration of 28.5 rad/s2 and her lower leg has a moment of inertia …
9. ### physics

The large quadriceps muscle in the upper leg terminates at its lower end in a tendon attached to the upper end of the tibia (see figure (a)). The forces on the lower leg when the leg is extended are modeled as in figure (b), where …
10. ### physics

The large quadriceps muscle in the upper leg terminates at its lower end in a tendon attached to the upper end of the tibia (see figure (a)). The forces on the lower leg when the leg is extended are modeled as in figure (b), where …

More Similar Questions