Question

Which is more work, pushing with 115 N over 15 m or lifting 20 Kg 10m? Step-to-step explanation

Answer 1

See the answers below.

Step-by-step explanation:

In order to solve this problem we must remember that work in physics is defined as the product of force by distance.

For the pushing force

`W_(1)=F*d\\W_(1)=115*15\\W_(1)=1725[J]`

For the lifting force

We must determine the weight, in this way multiplying the mass by the gravitational acceleration we determine the weight.

`W_(2)=m*g*d\\W_(2)=20*9.81*10\\W_(2)=1962[J]`

We can see that more work has to be done to lift the mass of 20 [kg] than to push the load.