Question

a) Calculate the weight in lbf on earth of a 50.0 lbm object

b) Calculate the weight in lbf on the moon of a 50.0 lbm object. Note that the gravitational acceleration constant (g) on the moon is 1/6th of the value on earth.

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Answer #1

A) What is the weight of a 69 kg astronaut on Earth?
B) What is the weight of a 69 kg astronaut on the Moon?
(g = 1.7 m/s2).
C) What is the weight of a 69 kg astronaut on Mars? (g
= 3.7 m/s2).
D) What is the weight of a 69 kg astronaut in outer space
traveling with constant velocity?

In this problem, you are going to explore three different ways
to determine the gravitational constant G.
Part (a) By observing that the centripetal
acceleration of the Moon around the Earth is ac
= 2.65 × 10-3 m/s2, what is the gravitatonal
constant G, in cubic meters per kilogram per square
second? Assume the Earth has a mass of ME =
6.02 × 1024 kg, and the mean distance between the
centers of the Earth and Moon is rm =...

Neil Armstrong weighs 170 lb on earth. Find his:
(a) mass in slugs
(b) mass in kilograms
(c) weight in Newtons
For (d)-(f), first find the acceleration due to gravity
on the moon. Show your work!
When Neil Armstrong was on the moon, determine
his:
(e) mass in kilograms
(f) weight in Newtons
(g) weight in pounds
Express each answer to three significant
figures.
Answer from e - g

Calculate, using Newton's law of gravity, the size of the force
of attraction between the earth and a mass of 2.0 kg on the earth.
Data: Distance to the center of earth from the surface = 6370 km.
Mass of earth = 5.98·1024kg. Gravitational constant G = 6.67·10-11
Nm2/kg2.
Calculate, using Newton's law of gravity, the size of the force
of attraction between the moon and a mass of 2.0 kg on the earth's
surface nearest the moon. Data: Distance...

If you weigh 690 N on the earth, what would be your weight on
the surface of a neutron star that has the same mass as our sun and
a diameter of 22.0 km ? Take the mass of the sun to be ms =
1.99×1030 kg , the gravitational constant to be G = 6.67×10−11
N⋅m2/kg2 , and the free-fall acceleration at the earth's surface to
be g = 9.8 m/s2 .
Express your weight wstar in newtons.

A 50.0-g object connected to a spring with a force constant of
100.0 N/m oscillates on a horizontal frictionless surface with an
amplitude of 8.00 cm.
a) What is the period (in seconds) and frequency of its
motion?
b) Assuming that the object's equilibrium position (i.e. when
the spring is unstretched) is designated as x = 0, and that at t =
0 the object is located at maximum amplitude, x(t) = A cos (ωt),
describes the motion. What is...

Assuming an object has a total mass of M and gravitational
constant on earth = g, air resistance = Cd, total surface area = A,
initial height = H, and this object has a thruster (assuming
constant thrust = F_thrust) that ignites at a time T_ignition and
stops burning at time T_turnoff (T_turnoff and T_ignition occur at
different time during the process), please derive an equation for
the velocity of this linear vertical motion as a function of time,
V(t).

(A) Calculate the acceleration of gravity,
gC, on Ceres
Apply the kinematics displacement equation to the falling
rock.
(1)
Δx = 1/2at2 +
v0t
Substitute Δx = -10.0 m, v0 = 0,
a = -gC, and t = 8.06 s, and
solve for the gravitational acceleration on Ceres,
gC.
-10.0 m = -1/2gC(8.06 s)2 →
gC = 0.308 m/s2
(B) Find the mass of Ceres.
Equate the weight of the rock on Ceres to the gravitational
force acting on the...

Calculate the magnitude of the acceleration of gravity for an
object that is (a) 0m, (b) 7550m, (c) 6.75×105m, and (d)
7.47×106m above the surface of the Earth. Take the
radius of a spherical Earth to be RE =
6.37×106m and the mass of Earth to be ME =
5.97×1024kg.

A space shuttle is orbiting around Earth, at distance r = 6.77 x
106 m away from the center of Earth. At this distance,
gravitational acceleration is equal to g = 8.69 m/s2.
There is an astronaut aboard the space shuttle, she is 1.70 m tall.
The difference in gravitational acceleration betweeen her feet and
her head is Δg = -4.36 x 10-6 m/s2
Considering the above information, answer parts a, b, c, d, and
e below. Include your explanation...

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