Problem

Determine the force P needed to pull the 50-kg roller Over the smooth step. Take θ = 60°...

Determine the force P needed to pull the 50-kg roller Over the smooth step. Take θ = 60°.

Step-by-Step Solution

Solution 1

Draw the free body diagram of the roller.

$Y:\fbd.jpg$

Draw the schematic representing the geometry of the segment .

$Y:\geometry.jpg$

Calculate the angle .

Substitute for and for .

When the roller is moving over the step the reaction exerted by the smooth surface will be zero, at that instant take the moments about point B.

Substitute for , for and for .

Therefore, the force required to pull the 50kg roller over the smooth step is .

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Textbook Solutions and Answers Search

Solutions For Problems in Chapter 5

1FP
1P
2FP
2P
3FP
3P

4FP
4P
5FP
5P
6FP
6P

7FP
7P
8FP
8P
9FP
9P

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