Calculate the work (in joules) done if 840 watts are used for 5 seconds.

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**Calculate the work (in joules) done if 840 watts are used for 5 seconds.**

**Your Answer:** 

---

To calculate the work done, use the formula:

\[ \text{Work (in joules)} = \text{Power (in watts)} \times \text{Time (in seconds)} \]

Given:
- Power = 840 watts
- Time = 5 seconds

Substitute these values into the formula:

\[ \text{Work} = 840 \, \text{watts} \times 5 \, \text{seconds} = 4200 \, \text{joules} \]

Therefore, the work done is 4200 joules.
Transcribed Image Text:**Calculate the work (in joules) done if 840 watts are used for 5 seconds.** **Your Answer:** --- To calculate the work done, use the formula: \[ \text{Work (in joules)} = \text{Power (in watts)} \times \text{Time (in seconds)} \] Given: - Power = 840 watts - Time = 5 seconds Substitute these values into the formula: \[ \text{Work} = 840 \, \text{watts} \times 5 \, \text{seconds} = 4200 \, \text{joules} \] Therefore, the work done is 4200 joules.
**Question:**

Calculate the gravitational potential energy of a 27 kg mass located 5 meters above the surface of the earth?

**Your Answer:**

*Explanation:*

Gravitational potential energy (GPE) can be calculated using the formula:

\[ \text{GPE} = m \cdot g \cdot h \]

Where:
- \( m \) is the mass in kilograms (kg)
- \( g \) is the acceleration due to gravity (approximately \( 9.81 \, \text{m/s}^2 \) on Earth)
- \( h \) is the height in meters (m) above the ground

In this problem:
- \( m = 27 \, \text{kg} \)
- \( h = 5 \, \text{m} \)

Plugging these values into the formula gives:

\[ \text{GPE} = 27 \cdot 9.81 \cdot 5 \]

Carry out the multiplication to find the gravitational potential energy.
Transcribed Image Text:**Question:** Calculate the gravitational potential energy of a 27 kg mass located 5 meters above the surface of the earth? **Your Answer:** *Explanation:* Gravitational potential energy (GPE) can be calculated using the formula: \[ \text{GPE} = m \cdot g \cdot h \] Where: - \( m \) is the mass in kilograms (kg) - \( g \) is the acceleration due to gravity (approximately \( 9.81 \, \text{m/s}^2 \) on Earth) - \( h \) is the height in meters (m) above the ground In this problem: - \( m = 27 \, \text{kg} \) - \( h = 5 \, \text{m} \) Plugging these values into the formula gives: \[ \text{GPE} = 27 \cdot 9.81 \cdot 5 \] Carry out the multiplication to find the gravitational potential energy.
Expert Solution
Step 1

Given:-

The power P = 840 Watt

The time t = 5 sec 

Find:-

a) The work done 

b) if the mass of the object is m = 27 kg and the height of the mass is h = 5 m then gravitational potential energy? 

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