   Chapter 4, Problem 36P

Chapter
Section
Textbook Problem

The distance between two telephone poles is 50.0 m. When a 1.00-kg bird lands on the telephone wire midway between the poles, the wire sags 0.200 m. Draw a free-body diagram of the bird. How much tension does the bird produce in the wire? Ignore the weight of the wire.

To determine
The tension on the wire.

Explanation

Given info: The mass of the bird is 1.00 kg. The distance between the two poles is 50.0 m. The wire sags 0.200 m.

The horizontal cosine components get cancelled. The vertical sine components get added to balance the weight.

The free body diagram is given below.

From the above diagram,

2Tsinθ=mg

• m is the mass of the car.
• g is the acceleration due to gravity.
• T is the tension on the wire.

On re-arranging,

T=mg2sinθ (I)

To calculate the value of θ , consider the following diagram.

From the diagram,

θ=tan1(0.2m25m)=0

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started 