**What is the angular displacement of the wheel between t=5 s and t=15 s? **

**What is the angular velocity of the wheel at 15 s?**

Judging from the graph,

t = 5 s is 100 rad

t = 15 s is 125 rad

**Angular Displacement** = 125 – 100 ( vector quantity)

Considering,

Clockwise 50 and anticlockwise 25 so net displacement

= clockwise **25** rad

**Angular velocity** = slope of angular displacement vs time curve

angular velocity is a straight line at

**t** = 15 s

w = (150 -100)/10

= 5 rad/s

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