A discus thrower is spinning in a circle of radius 1.6m. The maximum force her arm can exert is 2200N. How long will it take for her to complete one spin? The mass of the discus is 1.75kg.
Angular speed, acceleration and displacement
Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.
Angular Position
Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.
A discus thrower is spinning in a circle of radius 1.6m. The
maximum force her arm can exert is 2200N. How long will it take for
her to complete one spin? The mass of the discus is 1.75kg.
During a freak snow storm a banked curve (18°) with a radius of
85m is covered with frictionless ice. A car approaches this curve at
a speed of 19m/s. Will the car stay in the curve, fall into the curve
or slide out of the curve. Show the math of your answer.
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