Phyhsics questions

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Is the object represented below in stable equilibrium or not? Explain

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Top of FormQuestion 2Bottom of FormTop of Form

Why the person below is bending his torso and extending his arm, while carrying an uneven load?

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Question 3

Complete the sentence with the correct phrase:

A body is in static equilibrium if the vectorial sum of both the forces and the torques acting on the body is ______________________

1.

zero

2.

different of zero

3.

100 N

4. equal to body's weightBottom of Form

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Question 4

Write the equation of equilibrium of the forces along the y-axis for the forces acting on the person below

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Question 5

Find the magnitude of the force Fa, apply to the shoulder, needed to topple the person below, if the mass of this person is 115 kg (the pivot point is point A)

Question 6

If a force Fa of 125 N is applied to the shoulder of the person below. What is the minimum mass needed to avoid the force Fa topple the person (pivot point is point A).

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Question 7

Why spreading the legs, a person increases his stability?

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Question 8

Define “a lever” in Physics.

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Question 9

Calculate the force F needed to keep the lever below in balance:

a. What class is this lever?

b. Find its Mechanical Advantage.

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Top of FormQuestion 10

Calculate the force F needed to keep the lever below in balance:

a. What class is this lever?

b. Find its Mechanical Advantage.

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Question 11

Calculate the force F needed to keep the lever below in balance:

a. What class is this lever?

b. Find the Mechanical Advantage

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Question 12

Find the magnitude of the displacement L1:

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Question 13

Write the equations of translational equilibrium, and rotational equilibrium respect point A, for the model of the arm represented below.

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Question 14

Write the equations of translational equilibrium, and rotational equilibrium respect point A, for the model of the

hip represented below.

a. What represents the letters W and WL?

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Question 15

Find the force in the Achilles Tendon, if the weight W of the person is 700 N