An automated warehouse system uses a vertical lift mechanism to raise a storage container to an elevated shelf.
- The mass of the storage container is 120 kg120\text{ kg}120 kg.
- The vertical height of the shelf is 450 cm450\text{ cm}450 cm.
- The lift system raises the container to the shelf in 3.60 s3.60\text{ s}3.60 s.
- The gravitational field strength is g=9.8 N/kgg = 9.8\text{ N/kg}g=9.8 N/kg.
Calculate the useful power output of the lift system in raising the container.
The total electrical power input to the lift motor was actually greater than the useful power output calculated in Part 1. Suggest two reasons why.
Another lift system took less than 3.60 s3.60\text{ s}3.60 s to raise a different container to the same shelf height. The useful power output of this second lift system was measured to be the exact same as the first system.
What conclusion can be made about the mass of the second container?
- The second container's mass was greater than the first container's mass.
- The second container's mass was lower than the first container's mass.
- The second container's mass was the same as the first container's mass.
Energy changes in a system, and the ways energy is stored before and after such changes Questions
Practise AQA GCSE Physics Energy changes in a system, and the ways energy is stored before and after such changes with exam-style questions for Foundation and Higher tier. 64 questions covering Energy stores and systems, Changes in energy, Energy changes in systems, and Power, matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.