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valkas [14]
3 years ago
7

The image below shows two opposite forces acting on a rope, what can we say is true about the affect of the forces on the rope?

Physics
2 answers:
Tamiku [17]3 years ago
8 0
It would be D) the rope is pulled to the right. This is because their is a greater force in that direction.
kykrilka [37]3 years ago
6 0

Answer: Option D.

Explanation: Here are two forces applied in opposite ends of the rope, both forces pulling the rope in one direction (opposite directions).

this means that the total force is the addition of the two forces (not exactly, because they are at different heights, but is a good approximation), the resultant force will be 175N - 75N = 100N

Here you can see that the force pulling right is almost 100N bigger than the other force, this means that factors like the difference in height actually don't matter, the difference in force is large enough to predict that the net force on the rope moves it to the right.

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A bulb converts 9J of energy in each second from an input of 100J of energy. Calculate efficiency of this light bulb
77julia77 [94]
Efficiency is calculated through dividing the actual mechanical advantage by the hypothetical mechanical advantage:

- the actual mechanical advantage is 9J because that's how much work the light bulb doing

- the hypo. mechanical advantage is 100J. Ideally, in a perfect world, the light bulb can convert 100J input into 100J output, but do to resistance and other factors it is not possible.

\frac{9}{100}  = .09
change the decimal to a percentage:

.09 = 9\%
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Answer:

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Step 1: Look in your book or online for the conical pendulum equation.

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3 years ago
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Novosadov [1.4K]

Answer:

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