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When using a pulley system with a mechanical advantage of 10 how large an imput force wouldbe needed to lift a sne slab wieghing 2500 N?
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Which lever has the largest mechanical advantage?
the one with the fulcrum closer to the weight you needed to lift
What happens to the mechanical advantage of a machine if friction is reduced through the use of oil or some other means?
Wear and tear of moving parts would be reduced. Less energy would be needed to run the machine, as there would be less friction to be overcome. A well lubricated machine is more efficient than a neglected machine with unoiled parts.
What changes when a lever is used to lift a rock instead of lifting it by hand?
The mechanical advantage changes. The proportion of needed effort in relation to the rock's weight changes.
Using a pulley system with a mechanical advantage of 10 how large an input force would be needed to lift a stone slab weighing 2500 N?
250
What happens when the fulcrum is further from the load?
The closer the load is to the fulcrum the greater the mechanical advantage. The closer to the fulcrum, the less the load moves when the lever is used.
The wheel and axle is helpful because it reduces the effort needed to move a load. What is the trade off for this advantage?
Mechanical advantage
Which lever has the largest mechanical advantage?
the one with the fulcrum closer to the weight you needed to lift
What is meant by the term mechanical advantage?
A lever is a very useful tool that lets us exchange weight for distance. For example (theoretically) if you had to move a 200 pound sack into a car, but couldn't lift it, you could divide it into 8 parts, each being 25 pounds, and move each one individually into the car. It would be easy, however it would take more distance (lifting into the car 8 times instead of 1)
Find the effort force needed to lift a 2000 N rock using a jack with mechanical advantage of 10?
200
What happens to the mechanical advantage of a machine if friction is reduced through the use of oil or some other means?
Wear and tear of moving parts would be reduced. Less energy would be needed to run the machine, as there would be less friction to be overcome. A well lubricated machine is more efficient than a neglected machine with unoiled parts.
How does the mechanical advantage of a wheel and axle change the size of the wheel increases?
As the size of the wheel increases the necessary force needed to pull the wheel decreases
What changes when a lever is used to lift a rock instead of lifting it by hand?
The mechanical advantage changes. The proportion of needed effort in relation to the rock's weight changes.
Using a pulley system with a mechanical advantage of 10 how large an input force would be needed to lift a stone slab weighing 2500 N?
250
How does a block and tackle work?
By mechanical advantage. The multiple lengths of rope divide the force needed to lift an object everytime the rope reverses direction thru a pully.
How much less an object seems to weigh when using a simple machine?
The Mechanical Advantage is the ratio of the force needed to lift an object using the simple machine divided by the weight of the object
A lever is used to lift a load weighing 200N The force needed was 600N What is the mechanical advantage of this first class lever?
3 x 200 N = 600 N.
What happens when the fulcrum is further from the load?
The closer the load is to the fulcrum the greater the mechanical advantage. The closer to the fulcrum, the less the load moves when the lever is used.
