Answer:
the final angular velocity of the system would be 400 rpm
Explanation:
Recall that the kinetic energy of a rotating object is defined as:
where I is the object's moment of inertia, and 
its angular velocity.
If the kinetic energy is conserved in the coupling of the two discs, then the final kinetic energy of the new system should be the same:
therefore the new angular velocity will be:
half of the initial angular velocity. That is :
the final angular velocity of the system would be 400 rpm
Explanation:
There are three forces on the bicycle:
Reaction force Rp pushing up at P,
Reaction force Rq pushing up at Q,
Weight force mg pulling down at O.
There are four equations you can write: sum of the forces in the y direction, sum of the moments at P, sum of the moments at Q, and sum of the moments at O.
Sum of the forces in the y direction:
Rp + Rq − (15)(9.8) = 0
Rp + Rq − 147 = 0
Sum of the moments at P:
(15)(9.8)(0.30) − Rq(1) = 0
44.1 − Rq = 0
Sum of the moments at Q:
Rp(1) − (15)(9.8)(0.70) = 0
Rp − 102.9 = 0
Sum of the moments at O:
Rp(0.30) − Rq(0.70) = 0
0.3 Rp − 0.7 Rq = 0
Any combination of these equations will work.
Answer:
39%.
Explanation:
Spain produces electricity from wind energy was 18%, from hydropower is 14%, 5% from solar energy, and 2% from other renewable sources in the year 2016. About 39% of energy comes from renewable resources while on the other hand, 61% of energy comes from non-renewable resources such as petroleum. Spain has the capability to fulfill all its energy needs from renewable resources.
Then the object moves in a circle.
Answer:
If the combination of all the forces acting on an object sums upto be zero, then the net force is known as <u>balanced force.</u>
If the combination of all the forces acting on an object is non-zero, then the net force is said to be <u>unbalanced force. </u>The unbalanced force causes the object change the state of rest or motion.
