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Q.38

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 156

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Short Answer

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.

See the step by step solution

Step by Step Solution

Step 1: Given information

Mass of object at rest

time

Step 2: Explanation

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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