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Mechanical advantage .
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∙ 12y ago
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If work is don adiabatically on a system will the internal energy increase or decrease?
If work is done adiabatically on a system, the internal energy will increase. This is because adiabatic processes do not involve the exchange of heat with the surroundings, so any work done on the system will directly contribute to an increase in its internal energy.
If the work put into a lever is 930 joules and the work accomplished is 870 joules the efficiency of the lever is?
94%
What three things can a lever do to make work easier?
it's easier to lift things, u wont harm any bones in your body, and it is easy to work a lever
When you perform work on an object do you increase the energy of the object?
Generally yes, but it really depends on the specific situation. -- If the work is done to lift the object, then the object's potential energy is increased. -- If the work is done to accelerate the object, then the object's kinetic energy is increased. -- If the work is done to move the object against friction, then the energy supplied is dissipated, and the object's energy may or may not change, depending on whether or not it is somewhat heated by the dissipation.
A net force of 22 N accelerates a 4-kg mass over a distance of 18 m. What is the work done by this net force What is the increase in kinetic energy of the mass?
Work done by a force (W) = Force (F) x distance (m) W = 22 x 18 = 396 Joules According to the law of conservation of Energy, the total energy of a closed system is constant, but can change from one type to another. Therefore, the work given to the object must be converted into the kinetic energy of the object. So, Increase in Kinetic energy = work done = 396 Joules
How can a lever increase the force applied without changing the amount of work being done?
Work is force times distance. A lever will increase force, at the cost of distance, or it will increase distance, at the cost of force. Each of these is inversely proportional, so the net force times distance is the same. Said in other words, a lever cannot add to or subtract from work - work is the same in all cases.
Can a machine be created that can increase the accleration of human motion if yes then how and on what principle will it work?
Yes. That's called a lever.
When a screwdriver is used as a lever to open a paint can what is changed as the work is done?
lever
What is the work called that you do on a machine?
lever
When using a lever the force needed is called the?
Work.
Where should the fulcrum of a lever to make work harder?
closer to the point of where the work is being pushed/done
How does a third class lever work?
With a third class lever, the input force is located between the fulcrum and the load. They increase the distace the load is carried.
What cannot be done by a simple machine?
Increase Work
Work performed on a machine?
The work done by a machine is called work output
What are the two ways in which you can increase the amount of work done?
By increasing the distance also increasing the amount of work done
How does lever help make work easier?
a lever makes work easier in the sense that it help carry a heavy load from the ground in a process called lifting!
How does a simple machine make a hand brake work?
A simple machine uses a single applied force to do work against a single load force. Ignoring friction losses, the work done on the load is equal to the work done by the applied force. They can be used to increase the amount of the output force, at the cost of a proportional decrease in the distance moved by the force.
