I believe this is it
The centripetal force is given by
F = mv^2 / r
When v' = v/2,
F' = mv'^2/r = m(v/2)^2/r = mv^2/4r = F/4.
So the centripetal force is divided by 4.
<span><u>Answers</u>
Advantages.
1. Dynamos have no running cost. That means one bought they do not any running cost.
2. The power from the dynamo do not run out. As long as the bicycle is moving there will be enough lighting.
3. It environmental friendly. Dynamo do not use toxic chemicals to dispose.
Disadvantages
1. There can only be light if the bicycle is moving. Before the rider starts moving there is not light at all.
2. Whenever the speed reduces the light becomes dimmer. This means the rider has to maintain a certain speed for there to be enough light.
3. It require energy from the rider for there to be light. He has to keep on pending to maintain the motion of the bicycle.
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Well,
The sun's energy is produced mainly in the core, which has sufficient temperature to initiate nuclear fusion.
Hydrogen --> Deuterium --> Tritium --> Helium --> Beryllium? --> Carbon --> ? --> Silicon --> Iron/Nickel = Most massive stars<span />
Answer:
Explanation:
In order to solve this problem, we will need to draw a free body diagram of both situations (see attached picture).
So first, we need to find what the mass of the object is. We can do so by analyzing the horizontal movement of the first situation, so we get:
F=ma
so
m=2.34kg
next, we can analyze the second situation, we will start by analizing the vertical movement so we can determine the Normal force, so we get:
N=W
N=mg
N=3.79N
so now we can analyze the horizontal movement of the block, so we get:
The acceleration of the particle at time t is:
The velocity of the particle at time t is given by the integral of the acceleration a(t):
and the position of the particle at time t is given by the integral of the velocity v(t):
Assuming the particle starts from position x(0)=0 at t=0, the distance the particle covers in the first t=2 seconds can be found by substituting t=2 s in the equation of x(t):