Answer:
Speed of the car around the circular path will be 12 m/sec
Explanation:
We have given mass of the car m = 1500 kg
Radius of the curve r = 45 m
Centripetal acceleration of the car ![a=3.2m/sec^2](https://tex.z-dn.net/?f=a%3D3.2m%2Fsec%5E2)
We have to find the speed of the car
We know that centripetal acceleration is given by
, here v is car speed along the circular path and r is radius of the curve
So ![3.2=\frac{v^2}{45}](https://tex.z-dn.net/?f=3.2%3D%5Cfrac%7Bv%5E2%7D%7B45%7D)
![v^2=144](https://tex.z-dn.net/?f=v%5E2%3D144)
v = 12 m/sec
So speed of the car around the circular path will be 12 m/sec
Answer:
La tensión es 85.3 N.
Explanation:
Cuando el objeto gira en dirección horizontal, la sumatoria de fuerzas se puede calcular usando la segunda ley de Newton:
![\Sigma F_{x} =ma_{c}](https://tex.z-dn.net/?f=%20%5CSigma%20F_%7Bx%7D%20%3Dma_%7Bc%7D%20)
Dado que el movimiento es horizontal, el peso (que está en el eje y) no contribuye en la sumatoria de fuerzas en el eje x. Por lo que la única fuerza actuando sobre el objeto en la dirección del movimiento es la tensión.
En donde:
m: es la masa del objeto = 200 g = 0.200 kg
: es la aceleración centrípeta
La aceleración centrípeta viene dada por:
![a_{c} = \omega^{2} r](https://tex.z-dn.net/?f=a_%7Bc%7D%20%3D%20%5Comega%5E%7B2%7D%20r)
En donde:
ω: es la velocidad angular del objeto = 3 rev/s
r: es el radio = 1.20 m
Entonces, la tensión es:
![T = m\omega^{2} r = 0.200 kg(3\frac{rev}{s}*\frac{2\pi rad}{1 rev})^{2}*1.20 m = 85.3 N](https://tex.z-dn.net/?f=T%20%3D%20m%5Comega%5E%7B2%7D%20r%20%3D%200.200%20kg%283%5Cfrac%7Brev%7D%7Bs%7D%2A%5Cfrac%7B2%5Cpi%20rad%7D%7B1%20rev%7D%29%5E%7B2%7D%2A1.20%20m%20%3D%2085.3%20N)
Por lo tanto, la tensión es 85.3 N.
Espero que te sea de utilidad!
Answer:
DescriptionA storm surge, storm flood, tidal surge or storm tide is a coastal flood or tsunami-like phenomenon of rising water commonly associated with low pressure weather systems, the severity of which is affected by the shallowness and orientation of the water body relative to storm path, as well as the timing of tides.
Answer:
Scientists can discuss and compare very large numbers, which is useful because substances in everyday quantities contain very large numbers of atoms and molecules.
Explanation:
Answer:
Resistance in pencil sharpener = 12 ohms
Explanation:
Given:
Voltage in pencil sharpener = 6 volts
Current in pencil sharpener = 0.5 amps
Find:
Resistance in pencil sharpener
Computation:
Resistance = Voltage / Current
Resistance in pencil sharpener = Voltage in pencil sharpener / Current in pencil sharpener
Resistance in pencil sharpener = 6 / 0.5
Resistance in pencil sharpener = 12 ohms