How much work is done if you lift the 10 kg toolbox through a vertical distance of 2.5 m?

(a)  

How much potential energy is there in the 10kg toolbox when it's resting 2.5 m from the ground?

(a)  

If you drop a 10 kg toolbox, what is its kinetic energy when it hits the ground?

(a)  

When tightening a nut, if you apply a force of 300 N to a spanner at a point 150 mm from the centre of the nut, how much torque are you applying to the nut?

(a)  

Find the kinetic energy of a 200 kg mass travelling at a velocity of 6 m/s.

(a)  

How many watts does one horsepower represent?

(a)  

How much power do you develop if you climb a 20 m long ladder in two minutes? assume you weigh 60 kg and you are carrying an extra 5 kg of tools and equipment.

(a)  

A car engine is delivering 220 Nm of torque at 1950 RPM. Calculate the power it is producing.

(a)  

A machine requires 500 W of power and delivers 450 W of useful output power. Calculate the losses and the efficiency of the machine.

Format your answer as efficiency=xx%,losses=xxW - no spaces between any values.

(a)