Answer:
= -1.5t
= 0.25
= 0
Explanation:
Given equation;
p = [(-0.75 kgm/s³)t² + (3.0 kgm/s)] i + (0.25 kgm/s²)t j.
From Newton's law, the rate of change of momentum of a body is the net force acting on that body. i.e
∑F = 
-----------(i)
Substitute the equation of p into equation (i) and differentiate with respect to t as follows;
∑F = = ![\frac{d| [(-0.75)t^{2} + (3.0)] i + (0.25)t j|}{dt}](https://tex.z-dn.net/?f=%5Cfrac%7Bd%7C%20%5B%28-0.75%29t%5E%7B2%7D%20%2B%20%283.0%29%5D%20i%20%2B%20%280.25%29t%20j%7C%7D%7Bdt%7D)
∑F = = ![[-1.5t + 0]i + 0.25j](https://tex.z-dn.net/?f=%5B-1.5t%20%2B%200%5Di%20%2B%200.25j)
∑F =
But
∑F = 
Where;
are the components of the net force in the x, y and z direction respectively.
=> = = 
=> = -1.5t
=> = 0.25
=> = 0
I think the answer is A (sorry if it isn't).
The complete question is missing, so i have attached the complete question.
Answer:
A) FBD is attached.
B) The condition that must be satisfied is for ω_min = √(g/r)
C) The tension in the string would be zero. This is because at the smallest frequency, the only radially inward force at that point is the weight(force of gravity).
Explanation:
A) I've attached the image of the free body diagram.
B) The formula for the net force is given as;
F_net = mv²/r
We know that angular velocity;ω = v/r
Thus;
F_net = mω²r
Now, the minimum downward force is the weight and so;
mg = m(ω_min)²r
m will cancel out to give;
g = (ω_min)²r
(ω_min)² = g/r
ω_min = √(g/r)
The condition that must be satisfied is for ω_min = √(g/r)
C) The tension in the string would be zero. This is because at the smallest frequency, the only radially inward force at that point is the weight(force of gravity).
Answer:
Option (A)
Explanation:
A flowchart can be described as a representation of a process or an algorithm in a sequential manner (stepwise) in the form of diagrams. These steps are made of symbols that are connected to one another with the help of arrows. These arrows are used to show the direction of the process.
There are mainly four symbols that are used to describe a flow chart, which includes-
- Oval or Pill Shape- This type of symbol is used to depict the start or the end of a process.
- Rectangle Shape- This type of symbols is used to describe the process
.
- Diamond Shape- This type of symbol is used to represent decision
s.
- Parallelogram- This type of symbol is used for the representation of an input or an output.
Thus, the correct answer is option (A).
Answer:
The energy stored in the spring would be 1 joule.
Explanation:
hope that helps?
