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Exertion
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∙ 8y ago
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Do inclined planes help you use less force over a shorter distance?
It's either LESS force over a GREATER distance or MORE force over a SHORTER distance.
Is 5 over six greater than or less than 1 over 6?
It is greater than 1 over 6
Is 5 over 12 greater than less than or equal to 2 over 6?
greater than
Is 12 over 36 greater less than or equal to 12 over 24?
Less than.
Is 3 over 10 greater or less then 0.38?
It is less. It equals 0.30.
Why do machines the less force to do the same amount of work?
Because machines allow force to be applied over a greater distance.
Do inclined planes help you use less force over a shorter distance?
It's either LESS force over a GREATER distance or MORE force over a SHORTER distance.
What machines can change the direction of a force?
Well, its not that hard: Some machines help people do work by changing the size of the force needed. Have you ever tried opening a door by turning the shaft instead of the handle? Not as simple. It takes less force to use the handle instead of the shaft. If a machine (doorknob attached to shaft) allows you to exert less force, you must apply that force over a greater distance. the complete and total amount of work done remains the same, whether its by machine or not. Because a machine does not change the amount of work to be done, less force must mean greater distance. So: Machine=less force BUT greater distance!
Does an inclined plane lift a heavy load by using more or less force over distance greater?
Less
If a machine allows you to use less force to do some amount of work then you must apply the input force over a greater?
distance
How can machines make work easier without violating the law of energy?
For example, a lever can help you require less force. Force is not energy. To lift up (for example) a car, with a lever, you may need to apply less force than the weight of the car, but over a greater distance. Work is force x distance, and the amount of work - which is basically the mechanical energy required to move it - doesn't change.
Who is greater the applied force or the force exerted by the machine?
That depends on whether the machine is designed to multiply force or distance. A machine designed to multiply distance will exert less force than was applied, and a machine designed to multiply force will exert the greater force over a shorter distance than force was applied to it. As for work, output work is always less than input work because some energy is lost in overcoming friction.
Which exerts greater pressure on the floor standing flat footed or standing on tiptoe?
on tiptoe, because the force acts over less area
Which exerts greater pressure on the floor- standing flat footed or standing on tiptoe?
on tiptoe, because the force acts over less area
Which exerts greater pressure on the floor standing flat-footed or standing on tiptoe?
on tiptoe, because the force acts over less area
Is it true or false that in some machines the output force is greater than the input force?
Output force CAN'T be absolutely greater than input force because energy is lost due to friction. However, the "mechanical advantage" of a simple machine can be greater than one because the machine applies the force over a different distance.
Do machines increase distance over which force acts?
yes :D
