Answer:
a) 1.92 m/s2
b) 11.64 rad/s2
c) 14.715 N
d) 2.43 Nm
Explanation:
a) Using the following equation of motion we can solve for the linear acceleration a:
where h = 6m is the vertical falling distance, and t = 2.5s is the time of falling
b) The angular acceleration of the rotating pulley can be calculated using its radius r = 0.165 m
c) As the tension of the cord is caused by the gravity acting on the falling bucket. Let g = 9.81m/s2, the weight of the bucket and tension of the cord would be
F = W = mg = 1.5*9.81 = 14.715 N
d) The torque generated by the tension would be the product of the tension itself and the distance to the pivot point, aka center of the pulley
T =Fr = 14.715 * 0.165 = 2.43 Nm
Answer:
6.75m
Explanation:
To calculate the distance in this question, we can use the formula:
S = ut + 1/2at^2
Where; S = distance
u = initial velocity = 0m/s
t = 3s
a = 1.5m/s^2
Hence:
S = (0 × 3) + 1/2 (1.5 × 3 × 3)
S = 0 + 1/2 (13.5)
S = 13.5/2
S = 6.75
Therefore, the car will travel 6.75m in 3seconds.
The focal length will be = 2.67 cm
The distance between the convex lens or a concave mirror and the focal point of a lens or mirror is called the focal length. It is the point where parallel rays of light meet or converge.
given
u (object distance) = 260 cm
v (image distance) = 2.70 cm
f (focal length) = ?
using lens formula
1/f = 1/u + 1/v
= 1/260 + 1/2.70
= 2.67 cm
The focal length will be = 2.67 cm
To learn more about focal length here
brainly.com/question/14104969
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Explanation:
1.El objetivo principal de realizar la llamada entrada en calor o calentamiento, es preparar el cuerpo para la actividad física o deportiva. Numerosas lesiones y ciertos problemas cardíacos como algunas arritmias, están asociados a la ejercitación violenta sin mediar un adecuado calentamiento.
