percentages:
to use a machine,u must do the work on the machine called input work. the machine then foes the work on and object called output work. not all the input work gets transmitted to output work. some work is lost due to friction in the machine. if a machine has an input work of 250 joules and 25% of the input work is lost due to friction, what is the output work of the machine.
25% of 250 joules is lost to friction.
so 75% of 250 joules must be the output (assuming no other loses).
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Lory--If you have a question, post it by going to the top of the page and clicking on Ask A New Question. Piggy backing on another question usually delays an answer.
To find the output work of the machine, we need to determine the amount of input work that is lost due to friction and subtract it from the total input work.
Step 1: Calculate the amount of input work lost due to friction:
- The problem states that 25% of the input work is lost due to friction.
- To find this, we multiply the input work by the fraction representing the percentage: 250 joules * (25/100) = 62.5 joules.
Step 2: Calculate the output work:
- Subtract the amount of input work lost due to friction from the total input work: 250 joules - 62.5 joules = 187.5 joules.
Therefore, the output work of the machine is 187.5 joules.