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lina2011 [118]
3 years ago
6

calculate the force necessary to keep a mass of 2 kg moving on a circular path of radius 0.2 m with a period of 0.5 second. what

is the direction of this force
Physics
1 answer:
Sergeeva-Olga [200]3 years ago
6 0
Brideghdsrgjjncddionc
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At time t = 0 s, an object is observed at x = 0 m; and its position along the x-axis follows this expression: x = –4t + t2, wher
Anit [1.1K]

Answer:

The object displacement is 0 meters.

Explanation:

Because the expression for the object position as function of time is:

x(t)= -4t + t^2

At t= 3.0=t2 seconds the x-position of the object is:

x(3.0)= -4(3.0) + (3.0)^2

x(3.0s)=-3 m

and at t=1.0=t1 seconds the x-position of the objects is:

x(1.0)= -4(1.0) + (1.0)^2

x(1.0s)=-3m

The total displacement (\Delta x) of the object between t2 and t1 is the difference between x(3.0s) and x(1.0s):

\Delta x= x(3.0)-x(1.0)=-3.0-(-3.0)

\Delta x=0m

The displacement of the object is zero!!!

5 0
3 years ago
PLEASE HELP (100)
morpeh [17]

Answer:

The work done will be W=55.27\: J

Explanation:

The work equation is given by:

W=F\cdot x

Where:

F is the force due to gravity (weight = mg)

x is the length of the ramp (3 m)

Now, the force acting here is the component of weight in the ramp direction, so it will be:

F_{x-direction}=mgsin(28)

Therefore, the work done will be:

W=mgsin(28)*3

W=4*9.81*sin(28)*3

W=55.27\: J

I hope it helps you!

3 0
3 years ago
Enter a value of 3/4 of a full rotation
solmaris [256]

Answer:

270°

Explanation:

A full rotation is 360° so half (2/4) of it is 180° meaning a quarter (1/4) is 90°

So you can do 90+90+90=270

or 180+90=270

6 0
3 years ago
Need help with number 1
Margarita [4]
200 + 175 + 125 + 100 = 600
3 0
3 years ago
The rubber band contains .......potential energy as it is stretched.
kodGreya [7K]

Answer:

elastic potential energy

You input potential (stored) energy into the rubber band system when you stretched the rubber band back. Because it is an elastic system, this kind of potential energy is specifically called elastic potential energy.

Explanation:

4 0
2 years ago
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