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2) What force, applied tangentially to the Earth along 45° of latitude in the direction of...
9. (A) If a force of 25 Newton's is applied tangentially to the rim of a...
9. (A) If a force of 25 Newton's is applied tangentially to the rim of a uniform disk whose radius is .2 meters and mass is 30 kg, what angular velocity will the disk attain in .2 minutes? (B) What is the angular displacement (delta θ) during this acceration? 10. A disk-shaped wheel 1 meter in radius weighs 2000 Newton's. A force of 50 Newton's is applied tangentially to the rim. After how many seconds does it attain an angular...
2. The rotation of the earth might have an effect on g measured on the Earth....
2. The rotation of the earth might have an effect on g measured on the Earth. Let's imagine standing on a scale at a latitude on the Earth. Taking the rotation of the Earth into account, we want to evaluate the value of "g" that a scale would read that would be measured as the normal force from the scale (the apparent weight), to be m'g'. a. For a person standing at the north pole: i. Draw your free body...
3. Distinguish between. centripetal force and centrifugal force. Explain in what direction each force t acting...
3. Distinguish between. centripetal force and centrifugal force. Explain in what direction each force t acting and on what it is acting. 32 4. Calculate at what speed the earth would have to rotate in ordet that objects at the equator would have n weight. Assume the radius of the earth to be 6400 kilometers. What would be the linear speed of a point o the equator? What would be the length of a day (time from sunrise to sunset)...
The earth has a radius of 6380 km and turns around once on its axis in...
The earth has a radius of 6380 km and turns around once on its axis in 24 h. Part A What is the radial acceleration of an object at the earth's equator? Give your answer in m/s2. Part B What is the radial acceleration of an object at the earth's equator? Give your answer as a fraction of g. Part C If arad at the equator is greater than g , objects would fly off the earth's surface and into...
QUESTION 1 A crate at rest resting on a floor: Normal force direction will be: along...
QUESTION 1 A crate at rest resting on a floor: Normal force direction will be: along the angle of the ramp with respect to the horizontal towards the center of earth parallel to the surface of the ramp perpendicular to the surface of the ramp 1 points QUESTION 2 A box is at rest on a wooden surface. The frictional force direction in this case will be: Opposite to the direction of the applied force perpendicular to the surface...
An earth-like planet has a mass of 3.00x1024 kg and a radius of 8000 km. What...
An earth-like planet has a mass of 3.00x1024 kg and a radius of 8000 km. What is the gravitational field, g, on the surface of this planet? (We can simplify the Gravitational Constant G to 6.7x10-11 Nm-/kg) N/kg Submit Answer Tries 0/2 What is the force of gravity on an 92 kg alien standing on the surface of this planet? Submit Answer Tries 0/2 An earth-like planet has a mass of 6.00x1024 kg and a radius of 4000 km. A...
Task 2 (Gravitational Potential of the Earth) In good approximation, the earth can be regarded as...
Task 2 (Gravitational Potential of the Earth) In good approximation, the earth can be regarded as a sphere of homogenous mass density with radius R and total mass M. The gravitational potential of a mass m which has a distance r to the center of the earth is given by GMm , r>R U(r) 2R where Eo and G are constants a) Calculate the force F(r) which acts on a mass m at the earth's surface Hint: The gradient of...
After a space station is constructed, it is spun up from rest, using rockets attached tangentially...
After a space station is constructed, it is spun up from rest,
using rockets attached tangentially to the outside hull, in order
to simulate earth gravity for the occupants inside, shown in the
figure. We can model the station as a hoop that rotates around its
axis, and ignore the rest of the structure for the moment of
inertia.
The mass of the station is m = 50,000 kg, the outer
radius is r = 100 m.
a) The two...
Today, the Moon’s orbit around Earth has a semi-major axis of a=384,400 km and an orbital...
Today, the Moon’s orbit around
Earth has a semi-major axis of a=384,400 km and an orbital period
of 27.32166 days.
a. The Moon slowly moves outward due to tidal braking of the
Earth’s rotation, and at some future date the Moon will have an
orbital period of 47 days. Compute the semi-major axis of the
Moon’s orbit at this future date (express your answer in
kilometers).
semi-major axis = 5.5*10^5 km
b. Today, the Moon has an angular diameter of...
2. The rotation of the earth might have an effect on g measured on the Earth. Let's imagine standing on a scale at a latitude on the Earth. Taking the rotation of the Earth into account, we want to evaluate the value of "g" that a scale would read that would be measured as the normal force from the scale (the apparent weight), to be m'g'. a. For a person standing at the north pole: i. Draw your free body...
3. Distinguish between. centripetal force and centrifugal force. Explain in what direction each force t acting and on what it is acting. 32 4. Calculate at what speed the earth would have to rotate in ordet that objects at the equator would have n weight. Assume the radius of the earth to be 6400 kilometers. What would be the linear speed of a point o the equator? What would be the length of a day (time from sunrise to sunset)...
An earth-like planet has a mass of 3.00x1024 kg and a radius of 8000 km. What is the gravitational field, g, on the surface of this planet? (We can simplify the Gravitational Constant G to 6.7x10-11 Nm-/kg) N/kg Submit Answer Tries 0/2 What is the force of gravity on an 92 kg alien standing on the surface of this planet? Submit Answer Tries 0/2 An earth-like planet has a mass of 6.00x1024 kg and a radius of 4000 km. A...
Task 2 (Gravitational Potential of the Earth) In good approximation, the earth can be regarded as a sphere of homogenous mass density with radius R and total mass M. The gravitational potential of a mass m which has a distance r to the center of the earth is given by GMm , r>R U(r) 2R where Eo and G are constants a) Calculate the force F(r) which acts on a mass m at the earth's surface Hint: The gradient of...
After a space station is constructed, it is spun up from rest,
using rockets attached tangentially to the outside hull, in order
to simulate earth gravity for the occupants inside, shown in the
figure. We can model the station as a hoop that rotates around its
axis, and ignore the rest of the structure for the moment of
inertia.
The mass of the station is m = 50,000 kg, the outer
radius is r = 100 m.
a) The two...
Today, the Moon’s orbit around
Earth has a semi-major axis of a=384,400 km and an orbital period
of 27.32166 days.
a. The Moon slowly moves outward due to tidal braking of the
Earth’s rotation, and at some future date the Moon will have an
orbital period of 47 days. Compute the semi-major axis of the
Moon’s orbit at this future date (express your answer in
kilometers).
semi-major axis = 5.5*10^5 km
b. Today, the Moon has an angular diameter of...
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