NEET Physics Work Done by Forces MCQ Question
Which of the following statements about the work done by forces is correct?
The work done by a man lifting a bucket is positive.
The work done by gravitational force while lifting a bucket is positive.
The work done by friction on a body sliding down is positive.
The work done by an applied force on a body moving with uniform velocity is negative.
Correct Answer
Detailed Explanation
The work done by a man lifting a bucket is considered positive because he is applying a force in the direction of the displacement. In contrast, the work done by gravitational force in this case would be negative as it opposes the lift.
Found an issue with this question?
Related Questions
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...