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CAIE IGCSE Physics Work Done and Energy Transfer

Practise treating mechanical or electrical work as energy transferred, including energy gained by a lifted mass and dissipated through friction.

Syllabus
2026–2028
Course
Physics 0625

Exam points

  • add gravitational and kinetic energy gains to obtain mechanical work on a lifted mass
  • explain that friction does work as kinetic energy decreases and internal energy increases
  • identify that a stationary supported load has no displacement, work done or energy transfer

1.7.2.1—Mechanical or electrical work done is question 1

[Maximum number: 1]

A mass is lifted from rest on the ground to Y. There is no air resistance.

Figure for Question 1.7.2.1—Mechanical or electrical work done is question 1 — CAIE IGCSE Physics

P is the increase in gravitational energy of the mass.
Q is the kinetic energy of the mass at Y.
Which expression is equal to the mechanical work done on the mass?

A

P+Q

B

P-Q

C

Q-P

D

P×QP \times Q

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