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posted by  LaurieW on 7/24/2008 5:26:14 PM  |  status: Live  

Help! Due tonight, need quick answer pleaaase!

Course Textbook Chapter Problem
Algebra Based Physics College Physics (7th) by Serway, Faughn, Bennett 4 N/A
Question Details:
A 3.2 kg mass hangs at one end of a rope that is attached to a support on a railroad car. When the car accelerates to the right, the rope makes an angle of11.5° with the vertical, as shown in Figure P4.68. Find the acceleration of the car.
 m/s2


Figure P4.68

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posted by link1320 on 7/24/2008 5:39:43 PM  |  status: Live
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Response Details:
(Fnet)y=may
Tcos11.5-mg=0
T=(3.2 x 9.8)/cos 11.5
T=32


(Fnet)x=max
Tsin11.5=max
Tsin11.5/3.2=ax
ax=32 sin 11.5/3.2
ax=1.994 m/s^2
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