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Impulse of a force is a measure of total...

Impulse of a force is a measure of total effect of the force It is given by the product of everage force and the time for which the force acts on the body . Impulse of a force is measured by the total change in linear momentum produed during impact Impulse ` vec(I) = vec(F)_("avg") xxt = vec (p_(2)) - vec(p_(1)) ` A given change in linear momentum can be produced by applying a larger force for a shorter time or by applying a smaller force for a longer time Read the above passage and answer the following questions
(i) What is the function of shockers in autos
(ii) What values of life do you learn from this study ?

Text Solution

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(i) When autos ply over an uneven road , impulsive forces are exerted by the road The funcation of shockers is to increase the time of impact As `F xx t` = constant , therefore when `t` increases `F` decreases the force/jerk experienced by the rider of the vehicle raduces
(ii) In day life the relation
`F xx t ` = change in linear momentum = constant implies that to achieve any goal or to affect any change the product of force and time shall be constant when your efforts are weak you require longer time to achieve the goal .
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Impulsive Force

Impulse of a force measures the effect of the force. It is the product of force (F) and time (t) for which the force acts. Mathematically, impulse =Fxxt . It is equal to change in linear momentum of the body. For a given change in linear momentum, Fxxt=constant . If t increases, F decreases and vice-versa. For example, a player lowers his hands while catching a cricket ball. This would be increase t the time of catch. Therefore, F would reduce, i.e., his hands will not get hurt badly. Read the above passage and answer the following questions: (i)Why is crockery wrapped in straw or papers etc.? (ii) Why are vehicles like scooter, car, bus, trucks provided with shockers? (iii)What message does this paragraph give you for your day to day life?