Chapter 14, Problem 101A

a.

To determine

To Complete: The problem using the concept of law of conservation of energy.

Explanation of Solution

Introduction:

As per law of conservation of energy, the net energy of an isolated system is constant. The energy which disappears in one form and reappears in another.

The complete problem can be:

A block is suspended vertically from a spring with a spring constant of $200\text{N/m}$ . The block is released from rest and at this instance, the spring is stretched to 2 cm. Find the speed of the block. The mass of the block is 2 kg.

b.

To determine

To Complete: The problem using the concept of Newton’s second law of motion.

Explanation of Solution

Introduction:

As per Newton’s second law, the acceleration of a body directly depends on the net applied force on it.

  $F=ma$

The complete problem can be:

A block is suspended vertically from a spring with a spring constant of $200\text{N/m}$ . The block is released from rest. Find the length of the extended string. The mass of the block is 2 kg.

c

To determine

To Complete: The problem using the concept of frequency.

Explanation of Solution

Introduction:

The number of events occurring repetitively, per unit time is known as frequency.

  $f=\frac{1}{T}$

Where, $f$ is frequency and $T$ stands for period.

The complete problem can be:

A block is suspended vertically from a spring with a spring constant of $200\text{N/m}$ . The block is released from rest and at this instance, the spring is stretched to 2 cm. The mass of the block is 2 kg. Find the frequency of oscillations in spring.