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Chrome File Edit View History Bookmarks People Window Help Mon 11:25 PM Q. Hwa7(2001) C Chegg study I Guided solutio x C chegg study order Confirmat x C O www.webassign weblStudent Assignment Responses/last?dep 16215998 Your last submission is used for your score. 1. o -us points sencP107 PO02. A wheel has a radius of 4.40 m. How far My Notes do Ask Your T (a) 36.0. (path length) does a point on the circumference travel if the wheel is rotated through the following angles, respectively (b) 36.0 rad (c) 360 rev Need Help? Subm Answer Save Progress Practice Another Version -2 points sencP10 TP005. A dentist's drill starts from rest. Aner 4.10 s of constant angular acceleration it turns at a rate of 2.10 x 104 rev/min. (a) Find the drill's angular acceleration. Determine the angle (in radians) through which the drill rotates during this period. Need Help? LResan

Explanation / Answer

1) Q = l /r

36*pi /180 = l / 4.4

l = 2.76 m

b) 36 = l / 4.4

l = 158.4 m

c) 36*2*pi = l /4.4

l = 995.26 m

2) t = 4.1 s

u = 0

v = 2.1*10^4 rev / min = 21000 * 2*pi / 60 = 2199.1148 rad/s

v = u + at

a = v/t = 536.369 rad/sec^2

b) Q = ut + 0.5*a*t^2

Q = 0.5*536.369*4.1^2

Q = 4508.18 rad

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