## Rectilinear Kinematics: Continuous Motion| Engineering Mechanics| Dynamics| RC Hibbeler| Problem 12.1

A baseball is thrown downward from a 50-ft tower with an initial speed of Determine the speed at which it hits the ground and the time of travel. SOLUTION: $latex v_2^2=v_1^2+2a_c\left(s_2-s_1\right)&s=2&fg=000000$ $latex v_2^2=\left(18\right)^2+2\left(32.2\right)\left(50-0\right)&s=2&fg=000000$ $latex v_2=59.532\:ft/s&s=2&fg=000000&bg=8DB600$   $latex v_2=v_1+a_ct&s=2&fg=000000$ $latex 59.532=18+32.2\left(t\right)&s=2&fg=000000$ $latex t=1.29\:s&s=2&fg=000000&bg=8DB600$

## Dynamics ENGR 212-Ecampus| Oregon State University| Assignment #1 Ver. A

You can buy the complete solutions to the problems that follow. You will be directed to the solution file as soon as you will complete payment. Please do not close or refresh browser until then. If something went wrong, please send an email to enggmathem@gmail.com.  Problem #1: Problem #1, Part a: Determine the time (in seconds) … Continue reading Dynamics ENGR 212-Ecampus| Oregon State University| Assignment #1 Ver. A

## Problem 1-2|Stress | Mechanics of Materials| Ninth Edition| R.C. Hibbeler|

Determine the resultant internal normal and shear force in the member at (a) section a–a and (b) section b–b, each of which passes through point A. The 500-lb load is applied along the centroidal axis of the member. SOLUTION: Part a The free-body diagram of section a-a is shown below.   Solve for normal force at … Continue reading Problem 1-2|Stress | Mechanics of Materials| Ninth Edition| R.C. Hibbeler|

## Problem 1-1|Stress | Mechanics of Materials| Ninth Edition| R.C. Hibbeler|

The shaft is supported by a smooth thrust bearing at B and a journal bearing at C. Determine the resultant internal loadings acting on the cross section at E. SOLUTION: The free-body diagram is shown below. Solve for Cy by taking moment at point B $latex \sum M_B=0&s=1&fg=000000$ $latex C_y\left(8\right)+400\left(4\right)-800\left(12\right)=0&s=1&fg=000000$ Pass a cutting plane at … Continue reading Problem 1-1|Stress | Mechanics of Materials| Ninth Edition| R.C. Hibbeler|

## Rotation Angle and Angular Velocity| Uniform Circular Motion and Gravitation| College Physics| Openstax| Problem 6.1

Semi-trailer trucks have an odometer on one hub of a trailer wheel. The hub is weighted so that it does not rotate, but it contains gears to count the number of wheel revolutions—it then calculates the distance traveled. If the wheel has a 1.15 m diameter and goes through 200,000 rotations, how many kilometers should the odometer read?

## Friction| Further Application of Newton’s Laws: Friction, Drag, and Elasticity| College Physics| Openstax| Problem 1

A physics major is cooking breakfast when he notices that the frictional force between his steel spatula and his Teflon frying pan is only 0.200 N. Knowing the coefficient of kinetic friction between the two materials, he quickly calculates the normal force. What is it?

## Newton’s Second Law of Motion: Concept of a System| Dynamics: Force and Newton’s Laws of Motion| College Physics| Openstax| Problem 1

A 63.0-kg sprinter starts a race with an acceleration of 4.20 m/s^2 . What is the net external force on him?

## Vector Addition and Subtraction| Two-Dimensional Kinematics| College Physics| Openstax| Problem 3.1|

Find the following for path A in Figure 3.54:           (a) The total distance traveled, and           (b) The magnitude and direction of the displacement from start to finish.

## Phases and Classification of Matter| Essential Ideas| Chemistry| Openstax| Problem 17

How does a heterogeneous mixture differ from a homogeneous mixture? How are they similar?

## Phases and Classification of Matter| Essential Ideas| Chemistry| Openstax| Problem 16

How does a heterogeneous mixture differ from a homogeneous mixture? How are they similar?