The angular displacement of the centrifuge is given by 0 = 4[t+ 38e-0.02⁹t-38] rad, where t is in seconds and t = 0 is the startup time. If the person loses consciousness at an acceleration level of 7.7g, determine the time t at which this would occur. Verify that the tangential acceleration is negligible as the normal acceleration approaches 7.7g. Answer: t - i 28.1'7 6 sec

A wheel of radius 15cm begins to rotate on its axis from rest with a constant angular acceleration of 6.5 rad / s ^ 2. At t = 5 seconds, its centripetal acceleration in m / s ^ 2 is: a) 158.4b) 97.5c) 6.34d) 282

At the local swimming hole, a favorite trick is to run horizontally off a cliff that is 5.82 m above the water. One diver runs off the edge of he cliff, tucks into a "ball," and rotates on the way down with an average angular speed of 1.83 rev/s. Ignore air resistance and etermine the number of revolutions she makes while on the way down. Number 1.99 Units rev

A diver runs horizontally off the end of a diving tower 3.5m above the surface of the water with an initial speed of 2.5 m/s. During her fall she rotates with an average angular speed of 2.6 rad/s How many revolutions has she made when she hits the water? Express your answer using two significant figures.Δθ= (?) rev

A centrifuge in a biology laboratory rotates at an angular speed of 3,500 rev/min. When switched off, it rotates 54.0 times before coming to rest. Find the constant angular acceleration of the centrifuge (in rad/s2). Consider the direction of the initial angular velocity to be the positive direction, and include the appropriate sign in your result. rad/s? Need Help? Read It

A centrifuge in a medical laboratory rotates at an angular speed of 3550 rev/min. When switched off, it rotates 52.0 times before coming to rest. Find the constant angular acceleration of the centrifuge. rad/s?

An ultracentrifuge accelerates from rest to 9.91 × 10° rpm in 1.75 min. What is its angular acceleration in radians per second squared? angular acceleration: 978 rad/s? What is the tangential acceleration of a point 9.30 cm from the axis of rotation? tangential acceleration: 90.9 m/s? What is the radial acceleration in meters per second squared and in multiples of g of this point at full revolutions per minute? radial acceleration: 1.002 x10° m/s? radial acceleration in multiples of g:

Human centrifuges are used to train military pilots and astronauts in preparation for high-g maneuvers. A trained, fit person wearing a g-suit can withstand accelerations up to about 9g (88.2 m/s²) without losing consciousness. HINT (a) If a human centrifuge has a radius of 4.54 m, what angular speed (in rad/s) results in a centripetal acceleration of 9g? rad/s (b) What linear speed (in m/s) would a person in the centrifuge have at this acceleration? m/s