Please please help this is the second time I have posted this question.
Calculate the amount of work it will take to lift a lawn mower with a mass of 8kg onto the back of a truck which is 0.75m off the ground.show all conversions in your work.
Work = F*d = mg*d = 8*9.8*.75 = 58.8 J.
To calculate the amount of work required to lift the lawn mower onto the back of a truck, we can use the formula:
Work = Force × Distance
In this case, the force required to lift the lawn mower is equal to its weight. Weight is calculated by multiplying the mass by the acceleration due to gravity. The standard value for acceleration due to gravity is approximately 9.8 m/s².
Therefore, the force required to lift the lawn mower is:
Force = Mass × Acceleration due to gravity
Force = 8 kg × 9.8 m/s²
Force = 78.4 N
Now, we need to calculate the distance the lawn mower needs to be lifted. The distance is given as 0.75 meters in the question.
Now that we have both the force and the distance, we can calculate the work:
Work = Force × Distance
Work = 78.4 N × 0.75 m
Work = 58.8 Joules
Therefore, it will take approximately 58.8 Joules of work to lift the lawn mower onto the back of the truck.