NEET Physics Work-Energy Theorem MCQ Question
A block of mass 2 kg is pushed up a frictionless incline with an angle of 30° for a distance of 5 meters by a force of 20 N parallel to the incline. What is the work done by the gravitational force on the block?
-50 J
0 J
-100 J
50 J
Correct Answer
Detailed Explanation
The work done by the gravitational force is negative as it acts opposite to the displacement. Using the work-energy theorem, W = mgh = 2 * 10 * 5 * sin(30°) = -50 J.
Found an issue with this question?
Related Questions
More from Work-Energy Theorem
More from
Which of the following statements about power is correct?
Assertion (A): The dot product of two vectors is zero when the vectors are perpendicular. | Reason (R): The scalar product of two vectors is the produ...
Consider a diagram showing two vectors \( \vec{A} \) and \( \vec{B} \) at an angle \( \theta \) with each other. If the scalar product \( \vec{A} \cdo...