Work done by a force may be positive or negative depending on the angle q between the force and displacement. If the angle q is acute (q < 90o), then the work done is positive and the component of force is parallel to the displacement.
If the angle q is obtuse (q > 90o), the component of force is antiparallel to the displacement and the work done by force is negative.
It is clear from the equation that the work done by a force is zero when
(a) F = 0
(b) s = 0
(c) cosq =l 0
or q = 90o
assignmenthelp.net provides best Online assignment Help service in Physics for all standards. Our Tutor provide their high quality and optimized Tutorial help to fulfill all kind of need of Students.
To Schedule a Positive and Negative Work tutoring session click here
To submit Positive and Negative Work assignment click here.
Physics Assignment Help | Physics tutors | Online tutors | Physics Homework help | Online tutoring term paper help | Assignment help | Physics projects | Physics tutorial | Physics questions | physics problems | Physics online help | Science physics | Physics tutor | high school physics | Homework tutor | science help | physics experiments | Online Tutoring | Physics tutors | Homework tutoring