What would happen if the sun suddenly became a black hole without changing its mass?

It would shrink to a radius of 2.95 km

Explanation:

In order to be a black hole, the Sun must shrink so that its radius becomes equal to its Schwarzschild radius:

where

G is the gravitational constant

is the mass of the Sun

c is the speed of light

Substituting into the equation, we find

So, the Sun should shrink to a radius of 2.95 km.

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards