Find the final velocity of body after impact and the coefficient of restitution .
27-(a) A body of weight 440 N body moving to the left with a velocity of 10 m/s collides with another body of weight 760 N body which is at rest. After impact the body which is moving before impact comes to rest. Find the final velocity of body after impact and the coefficient of restitution .
(b)A vehicle of mass 21 tonnes runs into a buffer stop having two buffer springs connected in series each of 1750 kN/cm and 2200 kN/cm stiffness respectively. Find the maximum compression of the springs, if the vehicle is travelling at 90 km/hr. Also calculate the load acting on the spring.
a,Solution
The final velocity of body after impact in m/s is
The coefficient of restitution is
b,Solution
The maximum compression of the spring in mm is
The load acting on the spring in kN is
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