An object at rest begins to rotate with a constant angular acceleration. if this object rotates through an angle θ in time t, through what angle did it rotate in the time ½t?
a. 4θ
b. ¼θ
c. ½θ
d. 2θ
e. θ
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Ответ:
Angular displacement will be![\frac{1}{4}\Theta](/tpl/images/0401/4906/0f76c.png)
So option (b) will be the correct option
Explanation:
We have given that firstly object is at rest
So![\omega _i=0rad/sec](/tpl/images/0401/4906/f19f3.png)
From law of motion we know that angular displacement is given by
Now angular displacement by the object in![\frac{t}{2}sec](/tpl/images/0401/4906/8acb8.png)
So option (b) will be the correct option
Ответ:
all you need to do is use those "units" and stack them together as told to to form your answer
Step-by-step explanation: