Question

8. A lorry of mass 10000 kg takes 5000kg of sand to the top of a hill 50m high, unloads the
sand and then returns to the bottom of the hill. The gravitational field strength is 10N/ kg.
What is the overall gain in potential energy?
​

Answer 1

Answer:

Power P=mgVsinθ

Putting all the values in the equation will get,

P=10000×10×

50

1

×36×

18

5

=20kW

Answer 2

Answer:

Explanation:

25,000 00J