SAAT Physics 2 Section 1 (Angular Motion, Circular Motion, Rotational Motion, Torque) - تحصيلي

Angular poisiton and angular displacement

Are measured in radians, where one complete revolution = 2π

The angular velocity

W = △θ/t (measured in rad/s)

Angular acceleration

a = △w/△t (measured in rad/s/s)

When a solid rigid object rotates,

We can find its linear displacememt x = rθ

You can find the rotation of a rigid object with

The linear velocity (v = rw) and its linear acceleration a = ra

The angular velocity of an object

Changes when a moment of force or torque acts on it

Torque depends on

The amound of force applied

Torque applies to all of these

The perpendicular distance from the axis of rotation used and the angle between the direction of the force and the radius from the axis of rotation to the point of application

Point of application of the force

𝜏 = Fr sine θ (measured in Nm)

Center of mass of an object

A point on an object that moves in the same way as a point particle

A body is stable against overturning if

Its center of mass is above its base and the net moment acting on it is zero