Find the speed and average speed of a train which leaves the Florida Station at 10 p. m. and reaches next day at 10 a. m. The distance between the two stations
is 648 km and the total time for stoppage is 2 hours between these stations.
science

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