Question

Your company is designing a new water slide. In the initial design, a person travels down a curved slide, ending up moving horizontally at the bottom. There, the person grabs the bottom end of a 16.0 m long vertical bar that is pivoted at its center and swings out over a pool of water. When the bar has swung out as far as it will go, the person lets go and falls down into the water. Your task is to determine the height of the slide so that the maximum horizontal distance that the bar swings out is 5.0 m for a 60 kg person. The mass of the bar is 300 kg. From an engineering handbook, you find that the moment of inertia of the bar is 1/12 of its mass multiplied by its length.

Answer #1

You've been hired by a company that is designing a new toboggan
(Slide) for an aquatic amusement park. In the conceptual design, a
client is expected to go down the slide with a curved terminal and
then move horizontally at the bottom. At the end of the slide, the
customer grasps the outer of a 16.0 m long vertical bar that can
rotate around its center. After grabbing the bar, the client falls
into a pool. When the bar displace...

You are designing a slide for a water park. In a sitting
position, park guests slide a vertical distance h down the
waterslide, which has negligible friction. When they reach the
bottom of the slide, they grab a handle at the bottom end of a
6.00-m-long uniform pole. The pole hangs vertically, initially at
rest. The upper end of the pole is pivoted about a stationary,
frictionless axle. The pole with a person hanging on the end swings
up through...

A 52.4 kg child slides down a water slide with a velocity of 1.1
m/sec at the top. At the bottom of the slide, she is moving
horizontally, y=1.5 meters above the water. She splashes into the
water d=2 meters to the left of the bottom of the slide.1) Assuming
potential energy to be zero at the water level, what is the
mechanical energy of the child at the top of the slide? MEo=?. 2)
How high is the top...

1. A person pushes on a doorknob with a force of 5.00 N
perpendicular to the surface of the door. The doorknob is located
0.800 m from the axis of the hinges of the door. The door begins to
rotate with an angular acceleration of 2.00 rad/s2. What
is the moment of inertia of the door about hinges?
Select one:
a. 6.50 kg.m2
b. 2.50 kg.m2
c. 12.5 kg.m2
d. 2.00 kg.m2
2. A dumbbell has a connecting bar of...

1) A solar collector heats the water in the water tank
of a home. Which energy transformation equation best describes this
situation?
a) radiant --> thermal
b) radiant --> electrical
c) radiant --> gravitational -->
electrical
d) radiant --> gravitational -->
thermal
2) In which case is negative work done?
a) The work done by Earth on a ball as the ball, which
was initially at rest, falls 3.0 m down towards Earth.
b) A eastward force is applied to...

ch 6
1:
It is generally a good idea to gain an understanding of the
"size" of units. Consider the objects and calculate the kinetic
energy of each one.
A ladybug weighing 37.3 mg
flies by your head at 3.83 km/h
.
×10
J
A 7.15 kg
bowling ball slides (not rolls) down an alley at 17.5 km/h
.
J
A car weighing 1260 kg
moves at a speed of 49.5 km/h.
5:
The graph shows the ?-directed force
??...

21) A person carries a 25.0-N rock through the path shown in the
figure, starting at point A and ending at point B. The total time
from A to B is 1.50 min. How much work did gravity do on the rock
between A and B?
A) 625 J
B) 20.0 J
C) 275 J
D) 75 J
E) 0 J
22) A person carries a 2.00-N pebble through the path shown in
the figure, starting at point A and...

do all five questions
Question 1
20 pts
Ignoring the effects of air resistance, if a ball falls freely
toward the ground, its total mechanical energy
Group of answer choices
increases
remains the same
not enough information
decreases
Flag this Question
Question 2
20 pts
A child jumps off a wall from an initial height of 16.4 m and lands
on a trampoline. Before the child springs back up into the air the
trampoline compresses 1.8 meters. The spring constant...

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