In fig., the mass `m_(2)` starts with velocity `v_(0)` and moves with constant velocity on the surface. During motion, the normal reaction between the horizontal surface and fixed triangle block `m_(1)` is `N`. Then during motion.

Options

A. `N=(m_(1)+m_(2))g`
B. `N=m_(1)g`
C. `Nlt(m_(1)+m_(2))g`
D. `Ngt(m_(1)+m_(2))g`

Answer

A

Explanation

As `m_(2)` moves with constant velocity. There is no acceleration in the centre of mass. Net force should be zero. For this
`N=m_(1)g+m_(2)g`.