A size-5 soccer ball of diameter 22.6 cm and mass 426 g rolls up a hill without slipping, reaching a maximum height of 9.00 m above the base of the hill. We can model this ball as a thin-walled hollow sphere. Required:
a. At what rate was it rotating at the base of the hill?
b. How much rotational kinetic energy did it then have?

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

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cities become more industrialized

human population grows worldwide