What is the mechanical advantage of a pulley?
2 answers:
Answer:
Mechanical advantage is the ratio of the load and effort.
Mechanical advantage of a pulley is 1.
Explanation:
A pulley system will help in reducing the effort when lifting a load. If more pulleys are used, less effort force is required, making the lifting easy.
When only one pulley is used to lift a load, the mechanical advantage is 1.
If the number of pulleys used are increased, less effort can be applied, as the mechanical advantage increases.
The mechanical advantage is equal to the number of ropes passing over the pulley or pulleys to which the load is attached.
The rope along which the effort is applied is not counted.
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Answer:
Yes
Explanation:
Any transparent surface in practical is neither a perfect absorber of electromagnetic waves neither a perfect reflector. Generally all the transparent surfaces reflect some amount of irradiation and the other parts are absorbed and transmitted.
<u>That is given by as relation:</u>
where:
absorptivity which is defined as the ratio of the absorbed radiation to the total irradiation
reflectivity is defined as the ratio of reflected radiation to the total irradiation
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Answer:
1.2X10^3NC
Explanation:
Pls see attached file
