A capillary tube of length 2.4cm and internal diameter 0.2cm is weighed and its mass is found to be 0.15g. The tube is filled with mercury of density 13.5g/cm3 and weighed again. What will be the new mass of the filled tube?

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

you can cut your hand off if your not