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NISA [10]
3 years ago
14

Why is it important for a muscle to be attached to a fixed origin at one end and a moving insertion at the other? Discuss how th

is promotes movement, using one of the muscles you observed as an example.
Physics
1 answer:
vlabodo [156]3 years ago
6 0
Muscles function only by contracting. This makes it necessary for one end of the muscle to be fixed and the other mobile.
Take the bicep for example.
Its origin is at the shoulder and its two heads connect to the bones of the forearm, the radius and ulna.
Now, had the muscle not been fixed at one end, and contracted, it would pull both our shoulder and forearm together resulting in an ineffective movement. The desired motion is to lift the forearm (proximal and distal movement) which can only be achieved if the bicep is fixed at the shoulder and allowed to move at the forearm.
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How do you find the oscillation period in seconds for different pendulum lengths?
GalinKa [24]

To find:

The equation to find the period of oscillation.

Explanation:

The period of oscillation of a pendulum is directly proportional to the square root of the length of the pendulum and inversely proportional to the square root of the acceleration due to gravity.

Thus the period of a pendulum is given by the equation,

T=2\pi\sqrt{\frac{L}{g}}

Where L is the length of the pendulum and g is the acceleration due to gravity.

On substituting the values of the length of the pendulum and the acceleration due to gravity at the point where the period of the pendulum is being measured, the above equation yields the value of the period of the pendulum.

Final answer:

The period of oscillation of a pendulum can be calculated using the equation,

T=2\pi\sqrt{\frac{L}{g}}

3 0
1 year ago
Which statement is true because of Newton's second law?
expeople1 [14]
Newton's second law of motion says

                     Force = (mass) x (acceleration) .

<span>B. When the net force ACTING ON an object decreases,
the object's acceleration decreases.</span>

6 0
3 years ago
Read 2 more answers
If lebron james has a vertical leap of 1.29m, what is his takeoff speed?
BlackZzzverrR [31]
<span>v=u+at</span> <span>
0=5.0283−9.8×t</span><span>
t=0.5130sec</span><span>
Total time = 2t = 1.0261 sec</span>
3 0
3 years ago
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An object has 4J of kinetic energy and 16J of potential energy. How much mechanical energy does it have?
Ostrovityanka [42]

Answer: C. 20J

Explanation:  im pretty sure sorry if im wrong :(

7 0
4 years ago
A mass suspended from a spring bobs up and down one complete cycle every 2 s. its period is?
lilavasa [31]

The period is 2 seconds.

A period is a time taken to make one simple harmonic motion. It can be described as time divided by how many waves do. We can write the period formula as

T = t / n

where T is period, t is time and n is the amount of simple harmonic motions.

From the question above, we know that the mass travel up and down, it means that the cycle is one simple harmonic motion.

n = 1

t = 2s

Hence

T = t / n

T = 2 / 1

T = 2 second

For more on period at: brainly.com/question/24255969

#SPJ4

4 0
2 years ago
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