ICSE 10 Physics: Force, Work, Energy, and Power

Vocabulary and formula flashcards for ICSE Class 10 Physics Chapter 1 (Force) and Chapter 2 (Work Energy and Power) based on the Akshar Academy lecture notes.

Moment of force

$$\text{Force} \times \text{perpendicular distance}$$

SI unit of moment of force

$\text{newton} \times \text{metre}$ ($Nm$)

CGS unit of moment of force

$$\text{dyne} \times \text{cm}$$

Conversion: $1 \text{ Nm}$ to dyne cm

$$10^7 \text{ dyne cm}$$

Moment of couple

$$\text{either force} \times \text{perpendicular distance between the two forces}$$

Principle of moments

$$\text{Sum of anticlockwise moments} = \text{Sum of clockwise moments}$$

Clockwise moment sign convention

negative

Anticlockwise moment sign convention

positive

Centre of gravity: Rod

Mid-point of rod

Centre of gravity: Circular disc

Geometric centre of the disc

Centre of gravity: Solid or hollow sphere

Geometric centre of sphere

Centre of gravity: Solid or hollow cylinder

Mid-point of axis of cylinder

Centre of gravity: Solid cone

At a height $\frac{h}{4}$ from the base on its axis

Centre of gravity: Hollow cone

At a height $\frac{h}{3}$ from the base

Centre of gravity: Circular ring

Centre of ring

Centre of gravity: Triangular lamina

The point of intersection of medians

Centre of gravity: Parallelogram, rectangular lamina, square lamina, or rhombus

The point of intersection of diagonals

Uniform circular motion

An accelerated motion in which speed remains constant and direction changes at each point (Variable velocity)

Work

$$\text{Force} \times \text{displacement}$$