Answer:
At the highest point and at the lowest point the velocity of the mass hung on a spring = 0
Explanation:
Simple Harmonic Motion ( S.H.M) : Simple harmonic motion can be defined as a type of motion were a body vibrates or moves to and fro along a straight line under the influence of a force, so that the acceleration of the body towards a fixed point (equilibrium position) is proportional to its distance or displacement from that point. Examples of bodies undergoing simple harmonic motion are
<em>⇒ The motion of a mass hung on a spring.</em>
<em>⇒ The motion of a simple pendulum</em>
<em>⇒ The motion of a loaded test - tube in a liquid.</em>
Motion of a mass hung on a spring:When a mass is hung to one end spring and other end is firmly clamped to a rigid support.(i)When the mass is in motion, (ii)it pulled down to its lowest point, passes through it equilibrium position (iii) goes to its highest point.
<em>(1) At the lowest and the highest point during the motion of a mass hung a spring, the velocity = 0</em>
<em>(2) At the equilibrium point or unstretched position the velocity is maximum</em>
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Answer:
4.15 x 10^6 N
Explanation:
Area, A = 1.43 cm^2 = 1.43 x 10^-4 m^2
mass, m = 60.5 kg
Weight, F = m g = 60.5 x 9.8 = 592.9 N
Pressure = Force / Area
P = Weight / Area
P = 592.9 / (1.43 x 10^-4)
P = 4.15 x 10^6 N
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