[ICSE Class X Physics]
[Force – Complete Revision Notes]
By Ananya Sharma
5/7/2026
Revision notes + Formula Sheet
+ Common mistakes to avoid+
PYQ’s + a surprise
“Your score upgrade begins here.”
, CHAPTER
FORCE
A push or pull acting on a body that can
change its state of rest or moyion, or its shape.
One Newton(N)
One newton is a force which when applied
on a mass of one kg produces an acceleration Clockwise and Anticlockwise moment
of one ms-1 in it.
1 kgf = 9.8 N (relation)
1 gf = 980 dyne CW Moment (-ve moment) ACW Moment (+ve moment)
One kgf Reasoning questions
It is the force of gravity on one Most important
Kilogram of mass. 1. Why a steering is larger in diameter
in big vehciles?
Moment of force/Torque 2. Door handles are provided near the
free end of the door. Why?
It is the turning affect of a body about a
3. It is easier to open a nut from a long
fixed axis called Torque . handle wrench or screwdrive. Why?
The moment of force about an axis is equal to
the product of force and perpendicular distance
between axis of rotation and line of action of force
S.I unit = Nm(Vector quantity)
Torque = F*d
[Force – Complete Revision Notes]
By Ananya Sharma
5/7/2026
Revision notes + Formula Sheet
+ Common mistakes to avoid+
PYQ’s + a surprise
“Your score upgrade begins here.”
, CHAPTER
FORCE
A push or pull acting on a body that can
change its state of rest or moyion, or its shape.
One Newton(N)
One newton is a force which when applied
on a mass of one kg produces an acceleration Clockwise and Anticlockwise moment
of one ms-1 in it.
1 kgf = 9.8 N (relation)
1 gf = 980 dyne CW Moment (-ve moment) ACW Moment (+ve moment)
One kgf Reasoning questions
It is the force of gravity on one Most important
Kilogram of mass. 1. Why a steering is larger in diameter
in big vehciles?
Moment of force/Torque 2. Door handles are provided near the
free end of the door. Why?
It is the turning affect of a body about a
3. It is easier to open a nut from a long
fixed axis called Torque . handle wrench or screwdrive. Why?
The moment of force about an axis is equal to
the product of force and perpendicular distance
between axis of rotation and line of action of force
S.I unit = Nm(Vector quantity)
Torque = F*d
