The kinetic energy is

and the height of the building doesn't matter at all.

joules
Explanation:
Mass of the wheel, m = 49 kg
Radius of the hoop, r = 0.73 m
Initial angular speed of the wheel, 
Final angular speed of the wheel, 
Time, t = 22 s
(a) If I is the moment of inertia of the hoop. It is equal to,



We know that the work done is equal to change in kinetic energy.



W = -1858.05 Joules
(b) Let P is the average power. It is given by :


P =84.45 watts
Hence, this is the required solution.
Answer:
Explanation:
There is no change in mass. Therefore, mass = 70
k
g
Weight on Jupiter ≈ 1578 N
Induced motion or movement
Answer:
Accurate
Explanation:
Accuracy deals with the nearness of the measured values to the true value.
Precision is the ability to reproduce a certain result in a repeated fashion.
- From the given masses of the 5-lb bags, we see that the mean value of the measurement is 5.1-lb
- This value is very close to the original mass of the bag which is 5-lb bags.
- We can say the reading is accurate
The reading is not precise because, the same weight is not reproduced. Different values of weight was reported from each of the measurement process.