For an object in gravitational field, the gravitational potential is the same at two points A and B, but the gravitational field is not the same at these two points. Which one of the following statements is correct?
- A. Positive work is done by gravity in moving the object from point A to point B.
- B. Negative work is done by gravity in moving the object from point A to point B.
- C. Gravity must be non-conservative in such a region.
- D. No work is done by gravity in moving the object from point A to point B. ✓
Correct Answer: D. No work is done by gravity in moving the object from point A to point B.
Explanation
The work done by a conservative force like gravity depends only on the potential difference between the points. Since V_A = V_B, the change in potential energy is zero, so no net work is done by gravity.
Related questions on Physics
- The commercial unit of electrical energy is kilowatt-hour (kWh), which is equal to
- Which one of the following statements regarding a current-carrying solenoid is <strong>NOT</strong> correct?
- An object is made of two equal parts by volume; one part has density \rho_{0} and the other part has density 2\rho_{0}. What is the aver...
- A pressure cooker cooks food faster by
- Which one of the following wavelengths corresponds to the wavelength of X-rays?