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एक पिण्ड  \(\vec{F}=4t^3\)  न्यूटन बल, प्रथम दो सेकण्ड तक लगाया जाता है। पिण्ड के रेखीय संवेग में वृद्धि होगी:

(अ) 16 न्यूटन सेकण्ड

(ब) 8 न्यूटन सेकण्ड

(स) 48 न्यूटन - सेकण्ड

(द) 32 न्यूटन सेकण्ड

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सही विकल्प है: (अ) 16 न्यूटन सेकण्ड

\(j=\int ^ {t_2}_{t_1}Fdt\ =\ \int^2_0 4t^3dt\)

\(j=4[\frac{t^4}{4}]^2_0 \ =\ [t^4]^2_0=2^4-0\)

= 16 न्यूटन सेकण्ड

आवेग संवेग प्रमेय से,

रेखीय संवेग में परिवर्तन आवेग =  16 न्यूटन सेकण्ड

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