Isaac Anguja
Jul 16
A block and tackle system of 3 pulleys in the lower block and 4 in the upper block is used to lift the bars on a site.what is the velocity ratio of this system?if the load is to be lifted by a person?
Capable of applying a maximum effort of 1000N, what is the load that can be lifted under ideal conditions? If the actual maximum load that gets lifted turns out to be 6300N, what are the values of actual mechanical advantage and efficiency of the set-up ?
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ChatGPT
Jul 16
The velocity ratio of a block and tackle system is calculated by counting the number of ropes supporting the load. In this case, there are 3 pulleys in the lower block and 4 pulleys in the upper block, so the total number of ropes supporting the load is 7.
Therefore, the velocity ratio of this system is 7.
If the load is to be lifted by a person, the person would need to exert a force equal to the weight of the load divided by the velocity ratio of the system. This means that the person would need to exert a force 7 times less than the weight of the load in order to lift it using the block and tackle system.
Therefore, the velocity ratio of this system is 7.
If the load is to be lifted by a person, the person would need to exert a force equal to the weight of the load divided by the velocity ratio of the system. This means that the person would need to exert a force 7 times less than the weight of the load in order to lift it using the block and tackle system.
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Google Gemini AI
Jul 16
Velocity Ratio:
The velocity ratio (VR) of a block and tackle system is the ratio of the load lifted to the effort applied. It is calculated as:
VR = (Number of pulleys in lower block) / (Number of pulleys in upper block)
Given:
Number of pulleys in lower block = 3
Number of pulleys in upper block = 4
Velocity Ratio:
VR = 3 / 4 = 0.75
This means that for every 1 unit of force applied to the rope, the load will be lifted by 0.75 units.
If the load is to be lifted by a person:
To determine the effort required by a person to lift the load:
Effort = Load / VR
Assume the load is 500 kg:
Effort = 500 kg / 0.75 = 666.67 kg
Therefore, a person would need to apply a force of approximately 666.67 kg to lift the 500 kg load using this block and tackle system.
The velocity ratio (VR) of a block and tackle system is the ratio of the load lifted to the effort applied. It is calculated as:
VR = (Number of pulleys in lower block) / (Number of pulleys in upper block)
Given:
Number of pulleys in lower block = 3
Number of pulleys in upper block = 4
Velocity Ratio:
VR = 3 / 4 = 0.75
This means that for every 1 unit of force applied to the rope, the load will be lifted by 0.75 units.
If the load is to be lifted by a person:
To determine the effort required by a person to lift the load:
Effort = Load / VR
Assume the load is 500 kg:
Effort = 500 kg / 0.75 = 666.67 kg
Therefore, a person would need to apply a force of approximately 666.67 kg to lift the 500 kg load using this block and tackle system.
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Anonymous
Jul 16
A process by which moltern rock is forced out to the surfece of earth referred to as
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