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Test # 2, PHYS 1111, Section
Oct. 2, 2002, Stancil
1. A tightrope walker with a mass of 60.0 kg stands at the center of a rope
which was initially strung horizontally between two poles. His weight
causes the rope to sag symmetrically,
making an angle of 4.80° with the
horizontal. What is the tension in the rope?
a. 359 N
c. 2470 N
!(i\ 3520 N T~1 2:F. _ T fJ a --- --) v
2. 5 (12:20-1:10pm) 2 T sit\.. '1- X fI1:- t_ . - - f11J ~ G '(;0 -..: a), ,() 2 S'h 1/.'1(/ 2Sii1(9 (n~ 0 "\(q'J) -35.
- An object is being acted upon by three forces and moves with a constant
velocity. One force is 60.0 N along the x axis, the second is 75.0 N
along the Y axis. W~t
is the magnitude of ~he third force?
a. l35 N
IY / I
~ ,x::::b. 15.0 N
~ / (:; 0 IT 0
11" .f (
~ 0 .=; (7 ~ -7 f
c. 48.0 N
'1- @ 96.0 G
RI 0 N )< 'c1 (~rJjD ! I ~ 17) "I cl
-- 76.0 -= :, CJ
A mass is attached to one end of the string. The other end of the string is
attached to a rigid support. The mass is released at A and swings in a
vertical arc to points B, C, and D, as shown in the figure. Neglect air
resistance and use g = 10 m/s2.
3. - Refer to Scenario
energy? 8-7: At what point a. A A1 A b. B fcJc Af d.D Figure 6 B D C does the mass have the most kinetic ~::: Fe ~ U;t
Icc / I leA;:" 0 U( ~ 0 J.I ...
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- Fall '11