A rising bubble viscometer consists of a glass vessel that is 30 cm deep. It is filled with a liquid at constant temperature having a density of 1260 kg/m3. The time necessary for a bubble
having a diameter of 1 cm and a density of 1.2 kg/m3 to rise 20 cm up the center of column of
liquid is measured as 4.5 s. Calculate the viscosity of the liquid.

i think the answer would be reserve.

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

answer; how far out of place which the object finished relative to the starting location;