Let's say I give you a lovely red oak beam, with a modulus for elasticity of 1,820,000 psi (That's pound per square INCH). Let's say we're going to exert a force of 9000 pounds on it in the middle of the beam, with the beam's span equaling 157 in and a moment of inertia of 45.6 in^4. You now have all the information you need, tell me what the maximum deflection is going to be! (No units needed). Please round to 3 decimal places.

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)