A pool ball is rolling at a velocity of 12 cm/s to the right when it is hit by another ball. It continues moving right at a velo
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Answer:
See explanation
Explanation:
From what I can see in the question, there is a monkey of mass m suspened at the end of a spring which constant is k and this monkey has moved a distance d.
The mechanical energy for the situation will be composed of elastic potential energy from the spring, kinetic energy from the monkey and potential gravitational energy from the monkey as well.
where m is the monkey's mass, is the speed of the monkey, d is the distance that the monkey has moved, k is the spring constant and x is the distance that the spring has stretched
The pulleys will reduce the mechanical force (effort) required to lift the block and will change the mechanical advantage.
The pulley system is a type of simple machine which makes our work easier and faster by overcoming a large load when a small force (effort) is applied to it.
The efficiency of a machine is calculated as follows;
where;
- <em>M.A is the mechanical advantage </em>
- <em>V.R is the velocity ratio</em>
The velocity ratio of a pulley system = number of pulleys
The velocity ratio of a pulley system increases with increase in the number of pulleys.
Thus, we can conclude that the pulleys will reduce the mechanical force (effort) required to lift the block and will change the mechanical advantage.
Learn more about velocity ratio of pulleys here: brainly.com/question/24785465