A charged particle enters a magnetic field and initially is moving anti-parallel to the B-field. Which of the following statements about the charge's motion is true? 1) The charge moves in a circular orbit
2) The magnitude of the velocity does not change with time
3) The direction of the velocity does not change with time

pe = weightxheight = 2000x1000=2,000,000joules

because growing process had stoped after 4-5 year

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