A man pushes a drum of oil 10kg up an incline OA. If OA is 5m and AB is 3m, what is the potential energy of the drum at A.

294 Joules

Explanation:

From the question;

We are required to determine the potential energy of the drum at A

We know that potential energy is given by the formula;

Potential energy = mgh

where m is the mass, g is the gravitational pull and h is the height

Taking g as 9.8 N/kg

Then;

Potential energy = 10 kg × 9.8 N/kg × 3 m

                            = 294 Joules

Thus, the potential energy of the drum at A is 294 Joules

explanation:

as the height from which the ruler was dropped increased, the speed of the ruler at ryan's hand increased.