Question

A force of 5 Newton gives a mass M1 an acceleration of 20 metre per second what acceleration would it give if both the masses were tied together​

Answer 1

For mass m

1

newton 2nd law

F=m

1

a

1

5=m

1

×10

m

1

=

2

1

kg

For mass m

2

F=m

2

a

2

5=m

2

×20

m

2

=

4

1

kg

if tied together

Total mass =m

1

+m

2

=

2

1

+

4

1

=

4

3

kg

Now

F=M

T

Q

T

a

T

=

m

T

5

=

3

5×4

=

3

20

m/s

2

Answer 2

Answer:

Using Newton's second law,

F = m a

5 = M1 × 10

M1 = 5/10 = 0.5 kg

And

5 = M2 × 20

M2 = 5/20 = 0.25 kg

Total mass = 0.5 + 0.25 = 0.75 kg

Now as per question,

Let common acceleration is a,

F = (M1 +M2) ×a

5 = 0.75 × a

a = 5/0.75 =500/75 = 6.67 m/s²