part 1 definitions gtr's Flashcards
(22 cards)
rigid object
an object which cannot be distorted or modulated under net external force
circular motion
when a rigid object is rotated around a fixed axis at a certain distance
if the angular velocity = rev/s then is is called
rotational frequency
if the angular velocity = rad/s then is is called
angular frequency
central accelaration
the time rate change for the tangential velocity
what happen when the central force demise
thw body will be launched in a straigh line towards tangent of path at that point
irregular circular motion
when a object moves on a circular path with a variable speed with time
can a body move on a circular path without central force influencing it
no because central force change direction of object to keep it on circular path
can a moving body have a regular circular motion why
no it cant because effected by central force
when can a body moving on circuolar path possesing central accelaration and no tangential accelaration
when it moves in regular circular motion
clothes dryer gtr
because force of contact between water droplets and clothes less than central force
rotational motion
is the rotation of a rigid object around an axis that has passed from it or from one of its points
angular accelaration
time rate of angular velocity change
what is unit of angular acceleration
rad/s2
inertia torque unit
kg.m2
inertia torque depend on
mass of object
shape of object
mass distribution
torque unit
n.m
power of rotation unit
watt
angular momentum
angular momentum of object around its axis linear momentum torque
angular displacement
is the motion of an object on rotational angle
why can small car, truck and birk all move w same speed at same turn
because the mass doesnt appear in the mu s gr
2-A body can have an angular momentum even though the angular momentum in it is zero?
Because angular velocity is constant ,so the change in angular momentum equal zero
