A person is lifting a 250kg crate using a pulley. He is pulling the rope at an angle of 40 degrees with the pulley. The crate is suspended in the air at 3 meters. The person lifting the crate is not strong enough to and cannot lift the crate and the crate doesn't fall down either. What is the work done by the person? What is the work done by gravity? What is the work done on the crate?

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )

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step-by-step explanation:

2 over 5 and 4 over 15

don’t know last one sorry

step-by-step explanation:

no its the same as every other grade

step-by-step explanation: