How much work does it take to lift a #35 kg # weight #1/2 m #?
The amount of work required to complete an action can be represented by the expression
The amount of force required to lift an object is equal to the amount of force required to counteract gravity. Assuming the acceleration due to gravity is
Because gravity applies a force of -343N, to lift the box one must apply a force of +343N. In order to find the energy required to lift the box half a meter, we must multiply this force by half a meter.
We use the work equation, which states that
The force here is the weight of the box.
Weight is given by
So here, the weight of the box is
The distance here is
So, plugging in the given values into the equation, we find that
Note that I used