Linear and Angular Speed A Blu-ray discis approximately 12 centimeters in diameter. Thedrive motor of a Blu-ray player is able to rotate up to10,000 revolutions per minute.(a) Find the maximum angular speed (in radians persecond) of a Blu-ray disc as it rotates.(b) Find the maximum linear speed (in meters persecond) of a point on the outermost track as the discrotates.
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
Linear and Angular Speed A Blu-ray disc
is approximately 12 centimeters in diameter. The
drive motor of a Blu-ray player is able to rotate up to
10,000 revolutions per minute.
(a) Find the maximum angular speed (in radians per
second) of a Blu-ray disc as it rotates.
(b) Find the maximum linear speed (in meters per
second) of a point on the outermost track as the disc
rotates.
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