Problems: Consider a conical pendulum with an 80.0-kg bob on a 10.0-m wire making an angle of 5.00° with the vertical ( Fig. ). Determine (a) the horizontal and vertical components of the force exerted by the wire on the pen- dulum and (b) the radial acceleration of the bob.

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
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Problems:
Consider a conical pendulum with an 80.0-kg bob on a
10.0-m wire making an angle of 5.00° with the vertical
( Fig.
components of the force exerted by the wire on the pen-
dulum and (b) the radial acceleration of the bob.
). Determine (a) the horizontal and vertical
A 40.0-kg child swings in a swing supported by two chains,
each 3.00 m long. If the tension in each chain at the lowest
point is
point and (b) the force exerted by the seat on the child at
the lowest point. (Neglect the mass of the seat.)
O N, find (a) the child's speed at the lowest
A 0.500-kg object is suspended from the ceiling of an ac-
celerating boxcar as in Figure. If a = 3.00 m/s2, find
(a) the angle that the string makes with the vertical and
(b) the tension in the string.
A sky diver of mass 80.0 kg jumps from a slow-moving air-
craft and reaches a terminal speed of 50.0 m/s. (a) What is
the acceleration of the sky diver when her speed is
30.0 m/s? What is the drag force on the diver when her
speed is (b) 50.0 m/s? (c) 30.0 m/s?
A small piece of Styrofoam packing material is dropped
from a height of 2.00 m above the ground. Until it reaches
terminal speed, the magnitude of its acceleration is given
by a = g- bv. After falling 0.500 m, the Styrofoam effec-
tively reaches terminal speed, and then takes 5.00 s
more to reach the ground. (a) What is the value of the
constant b? (b) What is the acceleration at t = 0? (c) What
is the acceleration when the speed is 0.150 m/s?
Transcribed Image Text:| %A7 . 2 Homework_2.p... > Problems: Consider a conical pendulum with an 80.0-kg bob on a 10.0-m wire making an angle of 5.00° with the vertical ( Fig. components of the force exerted by the wire on the pen- dulum and (b) the radial acceleration of the bob. ). Determine (a) the horizontal and vertical A 40.0-kg child swings in a swing supported by two chains, each 3.00 m long. If the tension in each chain at the lowest point is point and (b) the force exerted by the seat on the child at the lowest point. (Neglect the mass of the seat.) O N, find (a) the child's speed at the lowest A 0.500-kg object is suspended from the ceiling of an ac- celerating boxcar as in Figure. If a = 3.00 m/s2, find (a) the angle that the string makes with the vertical and (b) the tension in the string. A sky diver of mass 80.0 kg jumps from a slow-moving air- craft and reaches a terminal speed of 50.0 m/s. (a) What is the acceleration of the sky diver when her speed is 30.0 m/s? What is the drag force on the diver when her speed is (b) 50.0 m/s? (c) 30.0 m/s? A small piece of Styrofoam packing material is dropped from a height of 2.00 m above the ground. Until it reaches terminal speed, the magnitude of its acceleration is given by a = g- bv. After falling 0.500 m, the Styrofoam effec- tively reaches terminal speed, and then takes 5.00 s more to reach the ground. (a) What is the value of the constant b? (b) What is the acceleration at t = 0? (c) What is the acceleration when the speed is 0.150 m/s?
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