Answer:
a. b. c. d. The angular acceleration when sitting in the middle is larger.
Explanation:
a. The magnitude of the torque is given by , being r the radius, F the force aplied and the angle between the vector force and the vector radius. Since and so .
b. Since the relation hols, being I the moment of inertia, the angular acceleration can be calculated by . Since we have already calculated the torque, all left is calculate the moment of inertia. The moment of inertia of a solid disk rotating about an axis that passes through its center is , being M the mass of the disk. If we assume that a person has a punctual mass, the moment of inertia of a person would be given by , being the mass of the person and the distance from the person to the center. Given all of this, we have
.
c. Similar equation to b, but changing , so
.
d. The angular acceleration when sitting in the middle is larger because the moment of inertia of the person is smaller, meaning that the person has less inertia to rotate.
Answer:
in this video waves are coming up for the BOTTOM to the top of the sandbar
Answer:
The answer is B
Explanation:
It's past tense and dad is singular
Answer:
Option B. 6.25 J/S
Explanation:
Data obtained from the question include:
t (time) = 2secs
F (force) = 50N
d (distance) = 0.25m
P (power) =?
The power can be obtained by using the formula P = workdone/time.
P = workdone / time
P = (50 x 0.25)/ 2
P = 6.25J/s
Answer:
40000÷40=1000 joules is required to work in 40 seconds