1. Hydropower should be used rather than coal and mineral oil.
1 answer:
You might be interested in
Answer:
The value of new value of angular speed of merry go round. = 0.96
Explanation:
Given data
r = 1.4 m
Moment of inertia = 265 kg -
11 RPM
= 1.15
From conservation of momentum principal
------- (1)
Put all the values in equation (1)
265 × 1.15 = 317.92 ×
= 0.96
This is the value of new value of angular speed of merry go round.
Answer:
a)
b)
c)
d) or 18.3 cm
Explanation:
For this case we have the following system with the forces on the figure attached.
We know that the spring compresses a total distance of x=0.10 m
Part a
The gravitational force is defined as mg so on this case the work donde by the gravity is:
Part b
For this case first we can convert the spring constant to N/m like this:
And the work donde by the spring on this case is given by:
Part c
We can assume that the initial velocity for the block is Vi and is at rest from the end of the movement. If we use balance of energy we got:
And if we solve for the initial velocity we got:
Part d
Let d1 represent the new maximum distance, in order to find it we know that :
And replacing we got:
And we can put the terms like this:
If we multiply all the equation by 2 we got:
Now we can replace the values and we got:
And solving the quadratic equation we got that the solution for or 18.3 cm because the negative solution not make sense.
