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How does an incline plane reduce amount of input force needed?
by increasing distance over which the force is applied
How do machines such as levers reduce the force needed to lift heavy objects?
By exchanging for for distance. You need to apply less force, but you need to apply it over a larger distance. Since work (or energy transfer) is force x distance, the total work is the same.
What does not reduce the amount of work that has to be done?
A force machine does not reduce the amount of work that has to be done
What does a pulley cause?
When used appropriately, a pulley can be used to reduce the amount of force needed to move an object. By using multiple pulleys, one can change the direction that force needs to be applied to move an object, as well as reducing the amount of force that is necessary through mechanical advantage.
How are levers grouped?
Levers are grouped by where the fulcrum, load, and effect force are found.
How does an incline plane reduce amount of input force needed?
by increasing distance over which the force is applied
Why is an oar a class 2 lever?
An oar is a class 3 lever. This is because the oar, like all class 3 levers, is not used to reduce the force needed to move the load, but is used to increase the amount of travel of the load.
What is the purpose of a inclined plane with a pulley?
To reduce the amount of force needed to carry objects into the truck k12
How would the amount of force that is needed to put the load up the inclined plane be reduced?
Reduce the friction
How do machines such as levers reduce the force needed to lift heavy objects?
By exchanging for for distance. You need to apply less force, but you need to apply it over a larger distance. Since work (or energy transfer) is force x distance, the total work is the same.
How do simple machines help things move?
By reducing friction [rolling instead of dragging across a surface]By decreasing the amount of force needed to perform an action (at the cost of reducing the amount of action) [levers, inclined plane]
What does not reduce the amount of work that has to be done?
A force machine does not reduce the amount of work that has to be done
Why do you use simple machines such as levers?
Because less force is required to accomplish the same amount of work.
What is the function of the lever?
A lever can rotate around the fixed point that is called a pivot. Levers are used to reduce the force need to do a particular task.
What does a pulley cause?
When used appropriately, a pulley can be used to reduce the amount of force needed to move an object. By using multiple pulleys, one can change the direction that force needs to be applied to move an object, as well as reducing the amount of force that is necessary through mechanical advantage.
How much force is needed to knock out a bear?
the amount needed is the amount that's taken by the bear
How are levers grouped?
Levers are grouped by where the fulcrum, load, and effect force are found.
