STANDARD Physics Work done by a variable force MCQ Question
A force F acting on an object varies with distance x as shown in the figure. The work done by the force in moving the object from x = 0 to x = 20 m is
500 J
1000 J
1500 J
2000 J
Correct Answer
Detailed Explanation
The work done is equal to the area under the F-x graph. This includes the area of rectangle ABCD and triangle ΔCDE. Calculating these areas gives 1000 J for the rectangle and 500 J for the triangle, totaling 1500 J.
Found an issue with this question?
Related Questions
More from Work, Energy and Power
A body of mass 1 kg begins to move under the action of a time dependent force F = (2t î + 3t² ĵ)N, where î and ĵ are unit vectors along x and y ax...
A particle acted upon by constant forces 4î + ĵ − 3k̂ and 3î + ĵ − k̂ is displaced from the point î + 2ĵ + k̂ to point 5î + 4ĵ + k̂. The total...
More from
Which of the following statements about power is correct?
Assertion (A): The work-energy theorem is an integral form of Newton's second law. | Reason (R): The work-energy theorem involves an integral over an ...
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...