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8 Energy – forces doing work

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Question 11

Two conveyor systems, A and B, move parcels between floors in a warehouse.

The table gives data for one journey of each conveyor.

Conveyor systemTotal energy supplied in kJEnergy dissipated in kJTime in s
A201220
B187.224

A conveyor system is suitable only if:

  • its efficiency is at least 50%
  • its useful power output is at least 350 W.

Which conveyor systems are suitable?

[1]
A

Conveyor system B only.

B

Both conveyor systems A and B.

C

Neither conveyor system A nor B.

D

Conveyor system A only.

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8 Energy – forces doing work Questions

  1. GCSE
  2. /Physics
  3. /8 Energy – forces doing work

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