Q.38

Expert-verifiedFound in: Page 156

Book edition
4th

Author(s)
Randall D. Knight

Pages
1240 pages

ISBN
9780133942651

A 5.0 Kg object initially at rest at the origin is subjected to the time-varying force shown below. What is the object’s velocity at ?

The objects velocity is 4 m/s.

Mass of object at rest

time

We know that the expression for velocity is given by

and According to Newton's second law,

where,

f= force, m= mass, a= acceleration

Substituting in we get the formula needed to find the velocity

i.e.

The value can be calculated from the given graph triangular area.

(i.e.,) The area of triangle

Now by Substituting the values in the equation (), we get

The object's velocity is

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