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Firdavs [7]
3 years ago
12

You are attending a county fair with your friend from your physics class. While walking around the fairgrounds, you discover a n

ew game of skill. A thin rod of mass
M = 0.535 kg and length ℓ = 2.45 m hangs from a friction-free pivot at its upper end as shown in the figure.

The front surface of the rod is covered with Velcro. You are to throw a Velcro-covered ball of mass m = 1.05 kg at the rod in an attempt to make it swing backward and rotate all the way across the top. The ball must stick to the rod at all times after striking it. If you cause the rod to rotate over the top position (that is, rotate 180° opposite of its starting position), you win a stuffed animal. Your friend volunteers to try his luck. He feels that the most torque would be applied to the rod by striking it at its lowest end. While he prepares to aim at the lowest point on the rod, you calculate how fast he must throw the ball to win the stuffed animal with this technique. How fast must he throw the ball to win the stuffed animal?
Physics
1 answer:
Jet001 [13]3 years ago
6 0

Answer:

I have no idea

Explanation:

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In this problem, we want to represent the relationship between the input of a system, x, and its output, y, using a polynomial.
alexandr402 [8]

Answer:

clc

clear all

close all

format long

A=load('xyg1.mat');

x=A(:,1);

y=A(:,2);

[z,N,R2]=polyfitsystem(x,y,0.95)

function [z,N,R2]=polyfitsystem(x,y,R2)

for N=1:20

z=polyfit(x,y,N);

SSR=sum((y-polyval(z,x)).^2);

SST=sum((y-mean(y)).^2);

s=1-SSR/SST;

if(s>=R2)

R2=s;

break;

end

end

xx=linspace(min(x),max(x));

plot(x,y,'o',xx,polyval(z,x));

xlabel('x');

ylabel('y(x)');

title('Plot of y vs x');

end

Explanation:

5 0
3 years ago
2: Assume we have created a packet-switched internet. Using the TCP/IP protocol suite, we
yaroslaw [1]

Answer:

Shown below as 'The advantage is that the router will always choose the faster route to send the packet and each connection is independent.'

Explanation:

The advantage is that the router will always choose the faster route to send the packet and each connection is independent.

Hope this helps!

Kind regards

Farah Syed

3 0
2 years ago
The sun's radiation has different wavelengths. the shorter is the radiation's wavelength, the weaker is the radiation's energy.
NeX [460]
It is false. Because the amount of energy carried in the wave is inversely related to the length of the waves wavelength. To correct the statement it should be that the shorter the radiation's wavelength the stronger is the radiation's energy.
7 0
3 years ago
particle moves over three quarters of a circle of radius R what is the magnitude of its displacement​
fomenos

Answer:

is equal to threee idont know

Explanation:

hindi ko alam ang explanation kwa kwek kwen hahahahhahahahaha

sanay akoy pag padendyahan niyo nay. hahahahhahahaha maawa kayo saakin mga aking mahal hahahhahahahahhaha hahah en then go char hahahhaa

6 0
3 years ago
What laws of motion are demonstrated by a hammer pounding a nail into a board?
julia-pushkina [17]
A hammer pounding a nail into a board is an example of Newton’s Third law.

Newton’s third law states that for every action there is an equal and opposite reaction. Meaning, when you hit the hammer on the board the same amount of energy that is going into the board, is going into the hammer. Causing the hammer to bounce off the board.

Hope this helps!
6 0
3 years ago
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