Question
In: Physics
A 51.9 kg person is standing on a platform that is accelerating. If the person has...
A 51.9 kg person is standing on a platform that is accelerating. If the person has an apparent weight of 873.8 Newtons, what is the acceleration of the platform in m/s2? Assume upward is the positive direction for acceleration
Solutions
genius_generous answered 2 years agoRelated Solutions
A 58.0 kg bungee jumper is standing on a tall platform (ho = 46.0 m) as...
A 58.0 kg bungee jumper is standing on a tall platform (ho =
46.0 m) as shown in the diagram. The bungee cord has an unstrained
length of Lo = 9.00 m, and when stretched, behaves like an ideal
spring with a spring constant of k = 61.0 N/m. The jumper falls
from rest, and the only forces acting on him are gravity and, for
the latter part of the descent, the elastic force of the bungee
cord. What is...
A person with mass mp = 70 kg stands on a spinning platform disk with a...
A person with mass mp = 70 kg stands on a spinning
platform disk with a radius of R = 2.1 m and mass md=
187 kg. The disk is initially spinning at ω = 1.4 rad/s. The person
then walks 2/3 of the way toward the center of the disk (ending 0.7
m from the center).
1. What is the total moment of inertia of the system about the
center of the disk when the person stands on the...
A person with mass mp = 78 kg stands on a spinning platform disk with a...
A person with mass mp = 78 kg stands on a spinning platform disk
with a radius of R = 2.37 m and mass md = 198 kg. The disk is
initially spinning at ω = 1.4 rad/s. The person then walks 2/3 of
the way toward the center of the disk (ending 0.79 m from the
center).
1)What is the total moment of inertia of the system about the
center of the disk when the person stands on the...
A person of mass 74 kg stands at the center of a rotating merry-go-round platform of...
A person of mass 74 kg stands at the center of a rotating
merry-go-round platform of radius 3.5 m and moment of inertia 880
kg⋅m2 . The platform rotates without friction with angular velocity
0.90 rad/s . The person walks radially to the edge of the
platform.
Calculate the angular velocity when the person reaches the
edge.
Calculate the rotational kinetic energy of the system of
platform plus person before and after the person's walk.
1. A person standing on Earth drops a ball. At the same time, a person standing...
1. A person standing on Earth drops a ball. At the same time,
a person standing at the bottom of a spaceship accelerating at
9.8m/s^2. In the absence of any significant field in deep space,
drops a ball. What would these people observe
2. Research general relativity and problems with the theory.
Identify two possible solutions to problems with general relativity
and the behaviour of galaxies. Do the solutions seem plausible to
you? Why or why not?
A person with mass mp=80 kg is standing at rest on a horizontal, frictionless surface holding...
A person with mass mp=80 kg is standing at rest on a horizontal,
frictionless surface holding a ball of wet clay with mass mg=10 kg
. In front of the person is a large block with mass M=20 kg at rest
next to a spring with stiffness k=100 N/m . The person throws the
ball horizontally, it sticks to the block, and then ball and block
slide and compress the spring a distance 1=0.75 m away from
equilibrium before the...
A person with mass mp=80 kg is standing at rest on a horizontal, frictionless surface holding...
A person with mass mp=80 kg is standing at rest on a horizontal,
frictionless surface holding a ball of wet clay with mass mg=10 kg
. In front of the person is a large block with mass M=20 kg at rest
next to a spring with stiffness k=100 N/m . The person throws the
ball horizontally, it sticks to the block, and then ball and block
slide and compress the spring a distance 1=0.75 m away from
equilibrium before the...
A person wants to catch the bus. Standing on the side of the street, the person...
A person wants to catch the bus. Standing on the side of the
street, the person sees the bus, 150 meters to the left appraoching
at 24.6 m/s. The bus stop is located 50 meters to the right.
Already, the bus is slowing-down at 1.45 m/s^2 so the person
immediately begins jogging towards the bus stop at a constant 3.12
m/s. (a) Which one gets to the stop first, (b) how long must it
wait for the other, and (c)...
Consider a standing person in the center of a large room. Approximate the person as a...
Consider a standing person in the center of a large room.
Approximate the person as a vertical cylinder of 1.8 m tall and 0.4
m diameter. Average surface temperature of the person is 33°C, and
the emissivity of skin surface is 0.96. (a) Calculate the radiative
heat transfer from this person. Neglect heat loss from the ends of
the cylinder (b) What is the wavelength λmax where the maximum
amount of energy will be radiated? (c) What region (primarily) of...
Consider a person standing on a bathroom scale. Draw a free body diagram for the person...
Consider a person standing on a bathroom scale. Draw a free body
diagram for the person and draw one for the scale. For each force
you identified on the person name the other object with which the
person is interacting.
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