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Grade 12General Physics

which graph represents the angular velocity as function of time in which the magnitude of angular velocity is contiguously decreasing? a) upward curve from origion with w on y axis and time on x axis b)upward straight line from constant on y axis c)downward straight line from constant on yaxis d) down parabola from origion

Profile image of siddharth chandil
13 Years agoGrade 12
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2 Answers

Profile image of vikas dhanaliya
13 Years ago

the answer is option (d)that is down parabola from origin

Profile image of Akash Kumar Dutta
ApprovedApproved Tutor Answer13 Years ago

Dear Siddharth,

As to me....since the angular velocity is continously decreasing so angular acc.(a) is constant.

we know  (delta)w=at..........since w(f)=w(i) + at

hence w is proptional to t

the graph should be a straight line starting from y axis at some point and ending at x axis at some time.

Regards.

Akash.