A superhero (mass 80.0 kg) is
on the edge of a window, holding a rope tied to a candlestick. To
attack the villain (70kg mass) standing just below the lampstand,
he lets himself swing with the rope from the window. Assuming that
the superhero's center of mass drops H = 6.4 m during the ride and
that the superhero releases the rope just when it hits the villain.
If the average kinetic friction coefficient of their bodies with
the floor is μk = 0.34, how far they slide if the enemies are
intertwined after the blow. i also need the physics principles,
conditions and they relations
Homework Answers
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A superhero (mass 80.0 kg) is
on the edge of a window, holding a rope tied...
If the motor exerts a P=300 N force on the cable wound around the outer edge...
If
the motor exerts a P=300 N force on the cable wound around the
outer edge of the reel, determine the cylinder speed of 50 kg after
it has traveled a distance of 2 m. Initially the system is at rest.
The reel has a mass of 25 kg and the radius of gyration with
respect to its center of mass A is KA=125 mm.
Si el motor ejerce una fuerza P 300 N en el cable enrollado alrededor del...
3.0m- te -5.0m---- ya_19. (Sec. 12.2) Un sube y baja de 8.0m de largo y masa...
3.0m- te -5.0m---- ya_19. (Sec. 12.2) Un sube y baja de 8.0m de largo y masa uniforme esta en equilibrio estático con un soporte que está a 3.0 de su extremo izquierdo y dos niños montados en sus extremos (ver figura). El niño más pequeño esta al extremo derecho y tiene masa de 40 Kg, y el niño más grande está en el extremo izquierdo y tiene masa de 80 Kg. ¿Cuál es la masa total del sube y baja?...
Two masses mA 1.0 kg and m 12.0 kg are connected by a rope as shown...
Two
masses mA 1.0 kg and m 12.0 kg are connected by a rope as shown in
the figure. The coefficient of kinetic friction between each of the
masses is and the inclined plane is μk 0.25. Determine the
acceleration of the system.
Dos masas mA = 1.0 kg y m la figura. El coeficiente de fricción cinética entre cada una de las masas y el plano inclinado es με = 12.0 kg están conectadas por una cuerda según se...
6. Presuma que está examinando las características oscilatorias del sistema de suspensión de un carro que...
6. Presuma que está examinando las características oscilatorias del sistema de suspensión de un carro que tiene una masa de 2400 kg. La suspensión baja 14 cm cuando se le coloca la carrocería encima. La amplitud decrece por un 50% durante una oscilación completa. Calcule: (a) La constante k del resorte, (b) La constante b de amortiguamiento para el sistema resorte y “shock absorber” de una rueda presumiendo que cada rueda sostiene 500 kg.
ABC bar has a mass of 2.87kg and is attached to a B-bracket bolt. A 0.65kg...
ABC bar has a mass of 2.87kg and is attached to a B-bracket bolt. A 0.65kg D-sphere hits the end of the bar with a vertical velocity v1 of 3.32m / s. If L = 0.73m and the coefficient of restitution between the sphere and the bar is 0.49, determine the angular velocity, in rad / s, of the bar immediately after impact.
La barra ABC tiene una masa de 2.87kg y está unida a un perno con soporte en...
Only 2 and 5 2. Three spheres of 5.00 kg each are separated by the distances...
Only 2 and 5
2. Three spheres of 5.00 kg each are separated by the
distances d1 and d2 as shown in the figure. Calculate the force of
attraction, in vectorial representation, if the distances are d1 =
0.300
-? -? m and d2 = 0.400m. Ans: ? = ?.?? × ??^-8 ?? + ?.?? ×
10^-6
5. At what altitude on the surface of the Earth, the
acceleration of gravity would have a value of 4.9 m / s2?...
Una columna de marmol con area transversal de 1.5 m^2 sostiene una masa de 23,000 kg....
Una columna de marmol con area transversal de 1.5 m^2 sostiene una masa de 23,000 kg. Determine cuanto reduce la columna si su altura inicial es de 8.7 m. El modulo elastico del marmol es 50 times 10^9 N/m^2.
11. How high should an object go so that its potential energy gain is the same...
11. How high should an object go so that its potential energy
gain is the same as its kinetic energy when it was moving at 20
m/s?
12. A 2000 kg carriage moves with an initial velocity of 25.0
m/s on horizontal road slides to a stop at a distance of 60.0 M.
(a) Find the work done by the kinetic friction force in the
carriage. (b) Determine the kinetic friction coefficient between
the wheels and the road. Ans: (a)...
the figure shows a section of the alpine system of wagons moved by the section of...
the figure shows a section of the alpine system of wagons moved
by the section of a cable. The maximum permitted mass of each wagon
with occupants is 2800 kg. The wagons, which travel on the support
cable, are pulled by a second cable from a tower. What is the
voltage difference between the two adjacent sections of the
traction cable if the wagons are accelerated upwards at a rate of
0.81 m / s2 and an inclination of 35...
A point mass moves without friction on the inside of a surface of revolution z=f(r) whose...
A point mass moves without friction on the inside of a surface of revolution z=f(r) whose axis of symmetry is along a gravitational field
a)Find the condition for a stationary circular orbit of radius
and show that It is stable or unstable under small impulses along
a transverse surface
to the direction of movement according to whether
it is positive or negative.
For a stable orbit, find the frequency ω of small oscillations
around the balance setting.
Original Question(in spanish)...
If
the motor exerts a P=300 N force on the cable wound around the
outer edge of the reel, determine the cylinder speed of 50 kg after
it has traveled a distance of 2 m. Initially the system is at rest.
The reel has a mass of 25 kg and the radius of gyration with
respect to its center of mass A is KA=125 mm.
Si el motor ejerce una fuerza P 300 N en el cable enrollado alrededor del...
3.0m- te -5.0m---- ya_19. (Sec. 12.2) Un sube y baja de 8.0m de largo y masa uniforme esta en equilibrio estático con un soporte que está a 3.0 de su extremo izquierdo y dos niños montados en sus extremos (ver figura). El niño más pequeño esta al extremo derecho y tiene masa de 40 Kg, y el niño más grande está en el extremo izquierdo y tiene masa de 80 Kg. ¿Cuál es la masa total del sube y baja?...
Two
masses mA 1.0 kg and m 12.0 kg are connected by a rope as shown in
the figure. The coefficient of kinetic friction between each of the
masses is and the inclined plane is μk 0.25. Determine the
acceleration of the system.
Dos masas mA = 1.0 kg y m la figura. El coeficiente de fricción cinética entre cada una de las masas y el plano inclinado es με = 12.0 kg están conectadas por una cuerda según se...
ABC bar has a mass of 2.87kg and is attached to a B-bracket bolt. A 0.65kg D-sphere hits the end of the bar with a vertical velocity v1 of 3.32m / s. If L = 0.73m and the coefficient of restitution between the sphere and the bar is 0.49, determine the angular velocity, in rad / s, of the bar immediately after impact.
La barra ABC tiene una masa de 2.87kg y está unida a un perno con soporte en...
Only 2 and 5
2. Three spheres of 5.00 kg each are separated by the
distances d1 and d2 as shown in the figure. Calculate the force of
attraction, in vectorial representation, if the distances are d1 =
0.300
-? -? m and d2 = 0.400m. Ans: ? = ?.?? × ??^-8 ?? + ?.?? ×
10^-6
5. At what altitude on the surface of the Earth, the
acceleration of gravity would have a value of 4.9 m / s2?...
Una columna de marmol con area transversal de 1.5 m^2 sostiene una masa de 23,000 kg. Determine cuanto reduce la columna si su altura inicial es de 8.7 m. El modulo elastico del marmol es 50 times 10^9 N/m^2.
11. How high should an object go so that its potential energy
gain is the same as its kinetic energy when it was moving at 20
m/s?
12. A 2000 kg carriage moves with an initial velocity of 25.0
m/s on horizontal road slides to a stop at a distance of 60.0 M.
(a) Find the work done by the kinetic friction force in the
carriage. (b) Determine the kinetic friction coefficient between
the wheels and the road. Ans: (a)...
the figure shows a section of the alpine system of wagons moved
by the section of a cable. The maximum permitted mass of each wagon
with occupants is 2800 kg. The wagons, which travel on the support
cable, are pulled by a second cable from a tower. What is the
voltage difference between the two adjacent sections of the
traction cable if the wagons are accelerated upwards at a rate of
0.81 m / s2 and an inclination of 35...
A point mass moves without friction on the inside of a surface of revolution z=f(r) whose axis of symmetry is along a gravitational field
a)Find the condition for a stationary circular orbit of radius
and show that It is stable or unstable under small impulses along
a transverse surface
to the direction of movement according to whether
it is positive or negative.
For a stable orbit, find the frequency ω of small oscillations
around the balance setting.
Original Question(in spanish)...
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