How can pulleys increase the mechanical advantage?
Pulleys alter the direction of the applied force making it easier for us to apply it.
It doesn't multiply the force. It merely changes direction providing mechanical advantage.
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Pulleys can increase mechanical advantage by distributing the force needed to lift an object across multiple ropes or chains. This reduces the amount of force required from the person lifting the object.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
- A balanced lever has two weights on it, the first with mass #72 kg # and the second with mass #18 kg#. If the first weight is # 6 m# from the fulcrum, how far is the second weight from the fulcrum?
- How much work does it take to raise a #28 kg # weight #49 m #?
- An object with a mass of #3 kg# is hanging from an axle with a radius of #2 cm#. If the wheel attached to the axle has a radius of #5 cm#, how much work would it take to turn the wheel a length equal to the circumference of the axle?
- How much work would it take to push a # 9 kg # weight up a # 2 m # plane that is at an incline of # pi / 6 #?
- What is the kinetic energy of an object with a mass of # 16 kg# that has been in freefall for # 6 s#?

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