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aliyahgregory
17.03.2020 •
Physics
A free body diagram of a brick on an inclined plane is shown below. What is the mechanical advantage of the inclined plane?
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Ответ:
#See solution for details.
Explanation:
-Mechanical advantage is the ratio of input force to an output force.
-Let the length of the inclined plane be x and the height be y.
-The mechanical advantage is calculated as:
Hence, the inclined plane increases the force being exerted by
times.
Ответ:
La altura máxima de la flecha es 99.459 pies
Explanation:
Los parámetros dados son;
La vertical inicial con la que se dispara la flecha, u = 80 pies / s
La distancia vertical recorrida por la flecha viene dada por la siguiente ecuación de movimiento;
v² = u² - 2 · g · s
Dónde;
v = La velocidad final de la flecha = 0 a la altura máxima
s = la altura de la flecha,
= Altura máxima
u = La velocidad vertical inicial de la flecha
g = La aceleración debida a la gravedad = 32,17405 pies / s²
Por lo tanto, tenemos;
0² = 80² - 2 × 32.17405 ×![s_{max}](/tpl/images/0835/9169/7e9f7.png)
80² = 2 × 32.17405 ×![s_{max}](/tpl/images/0835/9169/7e9f7.png)
6400 = 2 × 32.17405 ×![s_{max}](/tpl/images/0835/9169/7e9f7.png)
La altura máxima= 99.459 ft