How Much Work Is Done By The Force Lifting A 0.1-kilogram Hamburger Vertically Upward At A Constant Velocity Of 0.3 Meters From A Table?A) 0.03 J B) 0.1 J C) 0.3 J D) 0.4 J

by ADMIN 178 views

Work Done by a Force: Understanding the Concept

Work is a fundamental concept in physics that describes the transfer of energy from one object to another through a force applied over a distance. In this article, we will explore the concept of work done by a force, specifically in the context of lifting a 0.1-kilogram hamburger vertically upward at a constant velocity of 0.3 meters from a table.

What is Work?

Work is defined as the product of the force applied to an object and the distance over which the force is applied. Mathematically, work (W) is represented as:

W = F × d

where F is the force applied and d is the distance over which the force is applied.

Force and Distance

In the context of lifting a hamburger, the force applied is the weight of the hamburger, which is equal to its mass (m) multiplied by the acceleration due to gravity (g). The distance over which the force is applied is the height to which the hamburger is lifted.

Calculating Work Done

To calculate the work done by the force lifting the hamburger, we need to know the force applied and the distance over which it is applied. The force applied is the weight of the hamburger, which is:

F = m × g

where m is the mass of the hamburger (0.1 kg) and g is the acceleration due to gravity (approximately 9.8 m/s^2).

F = 0.1 kg × 9.8 m/s^2 = 0.98 N

The distance over which the force is applied is the height to which the hamburger is lifted, which is 0.3 meters.

d = 0.3 m

Now, we can calculate the work done by the force lifting the hamburger:

W = F × d = 0.98 N × 0.3 m = 0.294 J

Answer

So, the work done by the force lifting a 0.1-kilogram hamburger vertically upward at a constant velocity of 0.3 meters from a table is approximately 0.294 J.

Comparing with Options

Comparing our calculated value with the options provided:

A) 0.03 J B) 0.1 J C) 0.3 J D) 0.4 J

Our calculated value (0.294 J) is closest to option C) 0.3 J.

Conclusion

In conclusion, the work done by the force lifting a 0.1-kilogram hamburger vertically upward at a constant velocity of 0.3 meters from a table is approximately 0.294 J. This value is closest to option C) 0.3 J.

Key Takeaways

  • Work is defined as the product of the force applied to an object and the distance over which the force is applied.
  • The force applied is the weight of the object, which is equal to its mass multiplied by the acceleration due to gravity.
  • The distance over which the force is applied is the height to which the object is lifted.
  • The work done by a force can be calculated using the formula W = F × d.

Frequently Asked Questions

  • What is work in physics?
  • How is work calculated?
  • What is the formula for work?
  • What is the force applied in the context of lifting an object?
  • What is the distance over which the force is applied in the context of lifting an object?

References

  • [1] Halliday, D., Resnick, R., & Walker, J. (2013). Fundamentals of physics. John Wiley & Sons.
  • [2] Serway, R. A., & Jewett, J. W. (2018). Physics for scientists and engineers. Cengage Learning.
    Work Done by a Force: Q&A

In our previous article, we explored the concept of work done by a force, specifically in the context of lifting a 0.1-kilogram hamburger vertically upward at a constant velocity of 0.3 meters from a table. In this article, we will answer some frequently asked questions related to work done by a force.

Q1: What is work in physics?

A1: Work is a measure of the energy transferred from one object to another through a force applied over a distance. It is defined as the product of the force applied and the distance over which the force is applied.

Q2: How is work calculated?

A2: Work is calculated using the formula W = F × d, where W is the work done, F is the force applied, and d is the distance over which the force is applied.

Q3: What is the formula for work?

A3: The formula for work is W = F × d, where W is the work done, F is the force applied, and d is the distance over which the force is applied.

Q4: What is the force applied in the context of lifting an object?

A4: The force applied in the context of lifting an object is the weight of the object, which is equal to its mass multiplied by the acceleration due to gravity.

Q5: What is the distance over which the force is applied in the context of lifting an object?

A5: The distance over which the force is applied in the context of lifting an object is the height to which the object is lifted.

Q6: What is the unit of work?

A6: The unit of work is the joule (J).

Q7: Can work be negative?

A7: Yes, work can be negative. This occurs when the force applied is opposite to the direction of motion, resulting in a decrease in energy.

Q8: What is the difference between work and energy?

A8: Work is the transfer of energy from one object to another through a force applied over a distance, while energy is the ability to do work.

Q9: Can work be done by a force on an object if the object is not moving?

A9: Yes, work can be done by a force on an object even if the object is not moving. This occurs when the force applied is changing the shape or size of the object.

Q10: What is the relationship between work and power?

A10: Power is the rate at which work is done. It is calculated using the formula P = W / t, where P is the power, W is the work done, and t is the time over which the work is done.

Conclusion

In conclusion, work done by a force is a fundamental concept in physics that describes the transfer of energy from one object to another through a force applied over a distance. We hope that this Q&A article has provided a better understanding of the concept of work done by a force.

Key Takeaways

  • Work is a measure of the energy transferred from one object to another through a force applied over a distance.
  • Work is calculated using the formula W = F × d.
  • The force applied is the weight of the object, which is equal to its mass multiplied by the acceleration due to gravity.
  • The distance over which the force is applied is the height to which the object is lifted.
  • Work can be negative, and it can be done by a force on an object even if the object is not moving.

Frequently Asked Questions

  • What is work in physics?
  • How is work calculated?
  • What is the formula for work?
  • What is the force applied in the context of lifting an object?
  • What is the distance over which the force is applied in the context of lifting an object?

References

  • [1] Halliday, D., Resnick, R., & Walker, J. (2013). Fundamentals of physics. John Wiley & Sons.
  • [2] Serway, R. A., & Jewett, J. W. (2018). Physics for scientists and engineers. Cengage Learning.