Before railroad were invented, goods often traveled along canals, with mules pulling barges from the bank. if a mule is exerting a 12,000n force for 10km, and the rope connecting the mule to the barge is at a 20 degree angle from the direction of travel, how much work did the mole do on the barge?
1) length of the wire.
2) thickness of the wire.
4) type of metal.
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mechanical advantage is the ratio of the output force to the input force, so it can be represented by the equation: note that this equation represents the actual mechanical advantage of a machine. the actual mechanical advantage takes into account the amount of the input force that is used to overcome friction.
a is the correct answer.
the answer is d because an atom is the smallest unit of a substance