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What is the efficiency percentage of a mechanical device which requires 430 J of work to do 230 J of work in lifting a crate?
Wiki User
∙ 12y ago
230/430 = 53.49% (rounded)
Wiki User
∙ 12y ago
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A mechanical device requires 420 j of work to do 230 j of work in lifting a crate what is the efficiency of the device?
The efficiency is (output energy)/(input energy) = 340/400 = 85%
Is lifting weights mechanical energy?
no
What usually requires less work lifting or sliding?
Sliding
How much electrical power will a winch use when it has an efficiency of 0.5 and a useful lifting power of 2500 watts?
If the efficiency is 0.5, then the useful lifting power is 0.5 of the powerthat it must consume in order to do the job.2,500 W = 0.5 of input power.input power = 2,500 / 0.5 = 5 KW.
What is the efficiency for self locking lifting machine?
The condition for the self-locking lifting machine would include its reversibility. This condition is determined by the effort applied, the load lifted, and the distance to be moved.
A mechanical device requires 420 j of work to do 230 j of work in lifting a crate what is the efficiency of the device?
The efficiency is (output energy)/(input energy) = 340/400 = 85%
What would happen to a pulley system if the load were increased?
Ideal mechanical advantage is the mechanical advantage when there is no friction. It is the mechanical advantage when the efficiency of the pullefy system is 100%. It is a constant for that system of pulleys. Therfore it is not affected by increasing or decreasing the load. But actual mechanical advantage will be less than this ideal mechanical advantage due to friction. In other words the efficiency will be less than 100 %. If the efficiency is 80%, it implies 20% is wasted due to friction while lifting a load. If we increase the load the friction also increases and hence the efficiency will decrease with the load.
Is lifting weights mechanical energy?
no
What manual and mechanical lifting and moving aids are avilable?
fork lifts are a good mechanical lifting aid you can out more on it than a worker can carry
What usually requires less work lifting or sliding?
Sliding
What does Lifting an ax higher when chopping wood adds to the of the ax?
potential mechanical energy
What is your opinion Of the screw as a lifting device?
Even the best screws only have a mechanical advantage of twenty percent. Therefore, the screw is not a very efficient lifting device.
Mechanical energy examples?
Riding a bike, running, lifting weights
what is house lifting?
Raising a house with the help of screws or a mechanical jack from its foundation to the desired level.
How much electrical power will a winch use when it has an efficiency of 0.5 and a useful lifting power of 2500 watts?
If the efficiency is 0.5, then the useful lifting power is 0.5 of the powerthat it must consume in order to do the job.2,500 W = 0.5 of input power.input power = 2,500 / 0.5 = 5 KW.
As a load is mechanically lifted the materials?
Lifting loads heavier than about 50 pounds will increase the risk of injury, or mechanical lifting devices such as duct lifts to hold large.
What is the efficiency for self locking lifting machine?
The condition for the self-locking lifting machine would include its reversibility. This condition is determined by the effort applied, the load lifted, and the distance to be moved.
