Answer:
All parts of a wheel rotating about a fixed axis must have the same angular speed.
All parts of a wheel rotating about a fixed axis must have the same angular acceleration.
Explanation:
In a rigid body in rotation (a rotating wheel) with respect to a fixed axis, each particle on the body turns around the same angle in a certain time interval, having the same angular speed and the same angular acceleration. Otherwise, the wheel will deform, therefore it would not be in equilibrium
Answer:C
Explanation: I studied, and C is correct
We have first velocity equals 8 m/s and the kinetic energy is 480 J
The order is the mass of the object
We have this formula K= mv2/2 isolating the mass we have m=k/v2
Now we will have m=480/8×8 > m= 480/64 m= 7.5kg now we deternimed the mass it's 7.5 kg
The speed obtained by
the pilot is not accurate since it is measuring the rate of travel in the wind,
true velocity is that compared to the ground. Therefore the speed of the wind
is:
v wind = 165 - 145
v wind = 20 km/h<span>
<span>Therefore the wind velocity = 20 km/h against the plane.</span></span>