Question

`Two blocks of mass my and m2 are placed on a smoothhorizontal surface as shown in figure. When a horizontalforce Fis applied on m2 then magnitude of normal reactionbetween m and m2 isFm2m.FFm2m.m. + m2m Fm. + m2`​

Answer 1

Answer:

Expecting the force between m1 and m2 is T12 = - T21 and F, m1, m2 link order :

The equilibrium of (m1+m2)

F= (m1+m2)*a ; (1)

The equilibrium of m1:  

F-m1*a-T21= 0. (2)

The equilibrium of m2:

T12 -m2*a = 0. (3)

T12= -T21. (4). Newton’s 3. law.

From (3): T12 = m2*a.; T21 = - T12

Expecting F,m2,m1 link order

The equilibrium of m1+m2

F= (m1+m2)*a ; (5)

The equilibrium of m2:

F-m2*a-T12 = 0. (6)

The equilibrium of m1:

T21 - m1*a = 0. (7)

T21= -T12 (8) Newton’s 3. law.

From (7): T21= m1*a.; T12 = - T21