How much work does it take to raise a #7 kg # weight #23 m #?
It takes 1578 J.
The effort required to raise it there equals the gravitational potential energy gain, according to the conservation of energy principle.
The gravitational potential energy gain is expressed as follows:
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The formula yields the amount of work completed.
Thus, the completed work is:
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To calculate the work done in raising a weight against gravity, you can use the formula:
Work = Force × Distance
The force exerted when raising an object against gravity is equal to its weight, which can be calculated using the formula:
Weight = Mass × Gravity
Where:
- Mass (m) = 7 kg (given)
- Gravity (g) = 9.8 m/s² (approximate acceleration due to gravity on Earth)
So, Weight = 7 kg × 9.8 m/s² = 68.6 N
Now, you can calculate the work done:
Work = Force × Distance = Weight × Distance
Work = 68.6 N × 23 m = 1577.8 J
Therefore, it takes approximately 1577.8 Joules of work to raise a 7 kg weight by 23 meters against gravity.
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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.
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