Answer:
H=174.168ft
Explanation:
See diagram below.
First, calculate y using sine function:
Then, calculate x using cosine function:
Now use tangent to calculate y:
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2 answers:
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Answer:
Time, t = 141 seconds
Explanation:
Given that,
Distance between the class and the person, d = 282 m
Speed of the person, v = 2 m/s
We need to find the time taken by the person to get to your class. Let the time taken is t. The speed of the person is given by :
t = 141 seconds
So, the time taken by the person to get to your class is 141 seconds. Hence, this is the required solution.
Answer:
The angular velocity is
Explanation:
From the question we are told that
The mass of the child is
The radius of the merry go round is
The moment of inertia of the merry go round is
The angular velocity of the merry-go round is
The position of the child from the center of the merry-go-round is
According to the law of angular momentum conservation
The initial angular momentum = final angular momentum
So
=>
Now is the initial moment of inertia of the system which is mathematically represented as
Where is the initial moment of inertia of the boy which is mathematically evaluated as
substituting values
Thus
Thus
Now
Where is the final moment of inertia of the boy which is mathematically evaluated as
substituting values
Thus
Thus
Hence