Dynamics 14-36| The spring has a stiffness k = 50 lb/ft and an unstretched length of 2 ft.

Question: The spring has a stiffness k = 50 lb/ft and an unstretched length of 2 ft. As shown, it is confined by the plate and wall using cables so that its length is 1.5 ft. A 4-lb block is given a speed Va when it is at A, and it slides down the incline having a coefficient of kinetic friction μ = 0.2. If it strikes the plate and pushes it forward 0.25 ft before stopping, determine its speed at A. Neglect the mass of the plate and spring.

Problem 14-36:

Engineering Mechanics: Dynamics, 14th edition
Russell C. Hibbeler

Thank you guys for watching.

Please let me know if you have any comments or suggestions and also if you have any other problem you would like to go over with.

[austinneal]

when you found the value for the work done by weight you got 9.75. was there a number you forgot to write down? I got a different answer. other than that possibility this is a great video that really helped thanks.

[_anoel]

Hello. How to know where the value of 4 or 3 is placed on the object? Im quite confused with how it is placed

[MADDOX]

Hi, can I know what app are you using for yours notes please. Thanks!

[kurtgoering]

It should be 7.8 instead of 9.75 with a final velocity of 5.8 ft/s