Clarissa helps her mom put the lawn mower in the back of her
mom's truck. They lift the mower up from the ground to the
truck bed, which is 1.1 meters above the ground. She climbs
into the back of the truck to tie the lawn mower in place. If
she does 528 joules of work raising herself to the truck bed,
how much does she weigh?

480 N

Explanation:

the correct choice is a .

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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