Question

calculate apparent weight when the lift is at rest​

Answer 1

Answer:

view the answer in the picture

Answer 2

Given:

The lift is stationary.

To find:

Apparent weight of an object ?

Calculation:

Let us assume that mass of object placed on lift is "m".

Now, let's concentrate on the forces acting on the object while lift is stationary.

• Gravitational force downwards.

• Normal reaction (which signifies it's apparent weight).

So, according to FBD of lift , we can say:

$\sf \: \therefore \: N = mg - ma$

• For stationary lift, a = 0 m/s².

$\sf \implies\: N = mg - m(0)$

$\sf \implies\: N = mg$

$\sf \implies\: W_{apparent} = mg$

So, the apparent weight is equal to the actual weight of the object in a stationary lift.