# Homework H5.N - Fa22

Discussion and hints

The four-step plan:

1. FBD: It is recommended that you draw a free body diagram of the plate and cart combined.
2. Kinetics: Your FBD should show that the summation of forces in the direction of motion for the cart (call that the x-direction) is zero; therefore, linear momentum in the x-direction is conserved for ALL time. Also note that energy is conserved up to the point of impact. During impact, energy is not conserved; however, you are given the coefficient of restitution (COR) for the impact.
3. Kinematics: Write down the rigid body velocity equation relating the motion of points O and the plate's center of mass G. Here you will use the fact that the cart moves only in the x-direction.
4. Solve

## 2 thoughts on “Homework H5.N - Fa22”

1. Quqi Zhang says:

how to calculate the angular velocity of the plate before impact

1. Somya Jain says:

I might be wrong but I used the kinematics equation with finding the acceleration of a point relative to another on the body to find the angular velocity.