Your answer should be metal
Answer:
Efficiency = 80%
Explanation:
Given the following data;
Work output = 240 N
Work Input = 300 N
To find the mechanical efficiency of a machine;
Substituting into the equation, we have;
![Efficiency = \frac {240}{300} * 100](https://tex.z-dn.net/?f=%20Efficiency%20%3D%20%5Cfrac%20%7B240%7D%7B300%7D%20%2A%20100%20)
Efficiency = 80%
Therefore, the mechanical efficiency of the machine is 80 percent.
Answer:
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Explanation:
Answer:
The force F is created by the reaction of the Earth to the thrust of the rods, whereby the thrust is created by a force of action and reaction.
Explanation:
To answer this question, let's write Newton's second law of the two axes
Y Axis
Fy + N - W = 0
Fy + N = W
X axis
Fx - fr = 0
Fx = fr
The force F is created by the reaction of the Earth to the thrust of the rods, whereby the thrust is created by a force of action and reaction.
The direction of this force is along the length of the rods that are in an Angle, where the x and y components of the force come from
In general this force is small because the rubbing of the skis is small