Question

a block of mass M is kept on the floor of a box having acceleration a in upward direction finda block of mass M is kept on the floor of a box having acceleration a in the upward direction find normal reaction force on the block in grams in the box frame ​

Answer 1

Answer:

The normal reaction force on the block is 1000M(g - a)/g

Step-by-step explanation:

The force acting on the block of mass M will be

1. Normal reaction N upwards

2. Weight of the block Mg downwards

3. Force due to acceleration a i.e. Ma upwards

Since the block is in the state of rest

Therefore,

N + Ma = Mg

or, N = Mg - Ma

or, N = M(g - a)

In the above the units are in SI system i.e. the unit of N is N or kg-m/s²

In grams

$N=\frac{1000M(g-a)}{g}$