A small ball of mass 0.2 kg starts motion from rest at A by means of a compressed
spring with compression 0.5 m and spring constant k as shown in Fig.1 to move on a
rough horizontal plane
µk =0.4 and passes by point B to start motion inside a smooth tube until it reaches C
to move as a projectile and finally enters the shown net at D.
a) Study the motion of the ball as a projectile and determine VC.
b) Applying the principle of work and energy and deduced the value of the spring
constant k.

answer:

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explanation:

answer:

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explanation:

answer:

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explanation:

answer:

// here is code in C++.

#include <bits/stdc++.h>

using namespace std;

//main function

int main()

{

  // variable

 int n;

 cout<<"enter a number:";

 // read the input

 cin>>n;

 // find the square root of the absolute value

 float square_root=sqrt(abs(n));

 // print the square_root

 cout<<"square root of "<<n<<" is: "<<square_root<<endl;

  return 0;

}

Explanation:

Read a number from user and assign it to "n".Then find its absolute value with abs() function.Then calculate the square root of the absolute value with sqrt() function.Print the square root of the number.

Output:

enter a number:-17

square root of -17 is: 4.12311

                                                         This is easy

                                                     sinserly Natalie 7 grader (this is not that hard)