The radius of the earth very nearly circular orbit around the sun is
1.50
⋅
10
11
m. what is the magnitude of the earth‘s velocity and centripetal acceleration as it travels around the sun?

Answer

given,

radius of earth,r = 1.5 x 10¹¹ m

Time,T = 365 days

         = 365 x 24 x 3600 s  

earth velocity,

    v = 3 x 10⁴ m/s

centripetal acceleration of the earth

        a = 6 x 10⁻³ m/s²

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