Question

Describe motion of a body on a rough horizontal plane.​

Answer 1

Explanation:

F−f=ma

1

a

1

=a which is given

F=f+ma

1

Now applied force is doubled therefore

2F−f=ma

2

ma

2

=2(f+ma

1

)−f

This gives ma

2

=f+ma

1

+ma

1

=f+2ma

1

Therefore, clearly, a

2

>2a

1

a

2

>2a

Answer 2

Explanation:

F−f=ma

1

a

1

=a which is given

F=f+ma

1

Now applied force is doubled therefore

2F−f=ma

2

ma

2

=2(f+ma

1

)−f

This gives ma

2

=f+ma

1

+ma

1

=f+2ma

1

Therefore, clearly, a

2

>2a

1

a

2

>2a