Summary Further Studies Physics IEB Book B: Everything you need to know

Zoe Pearson



Ap Physics Grade 12 Syllabus

Torque 2
Projectile Motion 4
Uniform circular motion 6
Gravitational Fields 9
Orbits and Satellites 10
Charged Particles and Fields 12
Deflection of moving charged particles 15
Oscillations 20




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, Zoe Pearson


Torque

● Placement of a force matters
○ Because some forces can cause an object to rotate
○ linear(translational) motion and rotational motion
● When a force is exerted on an object, which is free to move about a point (usually
fixed at that point) the object will rotate


Fulcrum: the point about which an object turns or is supported(pivot point)

Torque: the tendency of a force to cause rotation(rotates about fulcrum) NOT A FORCE


Example: door




● Force at hinge-> nothing happen.
No torque/tendency to rotate
● Force in middle-> rotate. Is torque
● Force at end-> also rotate. More torque(theta is 90)

1.Any force acting at the fulcrum does NO torque
2.tendency= attempt at moving .˙. It is the same as the Rotational acceleration
3.Moment arm=lever arm




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