Question

Q1)At the surface of Jupiter's moon Io, the acceleration due to gravity is 1.81 m/s2 . A watermelon has a weight of 47.0 N at the surface of the earth. In this problem, use 9.81 m/s2 for the acceleration due to gravity on earth.

a-What is its mass on the earth's surface?

b-What is its mass on the surface of Io?

c-What is its weight on the surface of Io?

----------------------------------------------------------------------

Q2)The upward normal force exerted by the floor is 620 N on an elevator passenger who weighs 650 N.

a-What is the magnitude of the acceleration?

----------------------------------------------------------------------

Q3)A chair of mass 16.0 kg is sitting on the horizontal floor;
the floor is not frictionless. You push on the chair with a force
*F* = 38.0 N that is directed at an angle of 43.0 ∘ below
the horizontal and the chair slides along the floor.

a-Use Newton's laws to calculate the normal force that the floor exerts on the chair.

----------------------------------------------------------------------

Q4)An athlete whose mass is 94.5 kg is performing weight-lifting exercises. Starting from the rest position, he lifts, with constant acceleration, a barbell that weighs 540 N . He lifts the barbell a distance of 0.60 m in a time of 1.6 s .

a-Use Newton's laws to find the total force that his feet exert on the ground as he lifts the barbell.

Express your answer using two significant figures.

----------------------------------------------------------------------

Answer #1

Please post other question separately

acceleration due to gravity at earths surface is 9.80m/s2 .what is
the acceleration due to gravity at a distance 5 times the radius of
the earth from the center of the earth

The acceleration due to gravity g on Earth’s surface is
about 9.81 m/s2. Using the universal law of gravitation calculate
g as experienced by an astronaut on the ISS, orbiting at
average altitude of 415km.
What is the weight of a 60kg astronaut on the ISS?
Why does the astronaut experience ‘weightless’ even if her weight
in far from being zero?

Imagine a landing craft approaching the surface of Callisto, one
of Jupiter's moons. If the engine provides an upward force (thrust)
of 3120 N, the craft descends at constant speed; if the engine
provides only 2106 N, the craft accelerates downward at 0.39 m/s2.
What is the weight of the landing craft in the vicinity of
Callisto's surface?
b)What is the mass of the craft?
c)What is the free-fall acceleration near the surface of
Callisto?

The acceleration due to gravity on Mars is 3.71 m/s2. The period
for a pendulum is measured on Earth and on Mars. What would be the
ratio of the period on the Earth to the period on Mars? Or,
TEarth/TMars = ? Group of answer choices 0.3 1.2 0.6 0.9

The gravitational acceleration at the surface of planet X is
12.4 m/s2, and the radius of the planet is 64,500 km. The altitude
above the surface of planet X, at which the weight of a body is
equal to that on the surface of the earth, in km, is closest
to

A small dog has a weight of 49 N on earth.
Given that the acceleration due to gravity on earth is 9.8
m/s2 and the accleration due to gravity on the moon is
1.6 m/s2.
The mass of the dog on the moon is (choose one: 245kg, 5kg, 49kg
or 1kg) and the weight of the dog on the moon is (choose one: 245N,
5N, 49N or 8N)

(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...

On a strange planet where the acceleration due to gravity is 6.7
m/s2 , a rock is thrown downward at 3.00 m/s into a dark well and
the time until the sound of a splash is heard is measured. Using
250.0 m/s for the velocity of sound on this planet, determine the
actual distance to the surface of the liquid at the bottom of the
well (not water!). If the sound is heard 5.000 seconds later.

15) The Earth's surface gravity famously has a value of about
g=9.8 m/s2. Use the Law of Equilibrium to figure out the
gravitational acceleration in low orbit, at an altitude of about
1700 km. The Earth's mass is about 6×1024 kg and its radius is
about 6.4×106 meters. Answer:
16) Imagine a planet whose surface gravity is only a seventh. If
its radius is 9.14×105 m, what is the planet's mass? Answer:

1- You can find your own mass in
kg with the following information: 1.0 kg weighs about 2.2 lb. on
Earth. a) What is your mass in kg? b) What is your weight in
newtons?
2- Gunter the weightlifter can
lift a 230.0-kg barbell overhead on Earth. The acceleration due to
gravity on the sun is 274 m/s2. a) Would the barbells be heavier on
the sun or on Earth? b) How much (in newtons) would the barbells
weigh on...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 3 minutes ago

asked 13 minutes ago

asked 18 minutes ago

asked 21 minutes ago

asked 26 minutes ago

asked 26 minutes ago

asked 31 minutes ago

asked 32 minutes ago

asked 35 minutes ago

asked 39 minutes ago

asked 48 minutes ago

asked 55 minutes ago