A woodpecker’s brain is specially protected from largedecelerations by tendon-like attachments inside the skull.While pecking on a tree, the woodpecker’s head comes to astop from an initial velocity of 0.600 m/s in a distance of only2.00 mm. (a) Find the acceleration in m/s2and in multiplesof g (g= 9.80m/s2)⎠. (b) Calculate the stopping time. (c)The tendons cradling the brain stretch, making its stoppingdistance 4.50 mm (greater than the head and, hence, lessdeceleration of the brain). What is the brain’s deceleration,expressed in multiples of g ?
Displacement, Velocity and Acceleration
In classical mechanics, kinematics deals with the motion of a particle. It deals only with the position, velocity, acceleration, and displacement of a particle. It has no concern about the source of motion.
Linear Displacement
The term "displacement" refers to when something shifts away from its original "location," and "linear" refers to a straight line. As a result, “Linear Displacement” can be described as the movement of an object in a straight line along a single axis, for example, from side to side or up and down. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Linear displacement is usually measured in millimeters or inches and may be positive or negative.
A woodpecker’s brain is specially protected from large
decelerations by tendon-like attachments inside the skull.
While pecking on a tree, the woodpecker’s head comes to a
stop from an initial velocity of 0.600 m/s in a distance of only
2.00 mm. (a) Find the acceleration in m/s2
and in multiples
of g (g= 9.80m/s2)
⎠
. (b) Calculate the stopping time. (c)
The tendons cradling the brain stretch, making its stopping
distance 4.50 mm (greater than the head and, hence, less
deceleration of the brain). What is the brain’s deceleration,
expressed in multiples of g ?
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