Chapter 15, Problem 1P

Solve it correctly please. I

Please do it fast

-0,3 m The crate moves in a smooth vertical slot from A to B as shown, when a constant vertical force F C is applied to the rope. It starts motion from rest, and the attached spring has no deformation at A. If the mass of the crate is 6 kg, and the vertical 0,4 m displacement between A and B (Sg) is 0.20 m, Be determine the required constant vertical force F when the crate reaches B with a velocity of VB = F 3 m/s. The size and mass of the pulley can be k = 100 N/m neglected.

The 15-Mg boxcar A is coasting freely at 1.5 m/s on the horizontal track when it encounters a tank car B having a mass of 12 Mg and coasting at 0.75 m/s toward it as shown in the figure. If the cars meet and couple together, determine the average force between them if the coupling takes place in 0.8s. 15 m/s 0.75 m/s O 18.8 KN O 6.2 KN o 24.4 KN O36.9 KN

The uniform slender rod (6.7 kg) is pinned at point O. If a 7.6-g bullet shoots into the rod with a speed of 640 m/s and becomes embedded in it, determine the total angular momentum H (in kg•m²/s) about point O immediately after that. The rod and the bullet are considered one system. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point. Take g = 9.81 m/s². G 0.2 m ↓ Your Answer: 1 m Answer

The uniform slender rod (7.1 kg) is pinned at point O. If a 5.4-g bullet shoots into the rod with a speed of 660 m/s and becomes embedded in it, determine the total angular momentum H (in kg.m²/s) about point O immediately after that. The rod and the bullet are considered one system. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point. Take g = 9.81 m/s². G1m 0.2 m

The hollow tube assembly rotates about a vertical axis with a constant angular velocity of 6 rad/s. A small 2.3-kg slider P moves inside the smooth horizontal tube portion under the control of the string which passes out the bottom of the assembly. The slider is pulled in towards O at a constant rate of 0.31 m/s. What is the tension in the cord when r= 0.15 m? Die hol buiseenheid roteer om 'n vertikale as met 'n konstante hoeksnelheid van 6 rad/s. 'n Klein 2.3-kg skuifstuk P beweeg binne in die gladde horisontale buisgedeelte onder die beheer van die tou wat aan die onderkant van die eenheid uitsteek. Die skuifstuk word teen 'n konstante tempo van 0.31 m/s na O ingetrek. Wat is die spanning in die koord as r = 0.15 m?

The 600,000-lb jet airliner has a touchdown velocity v=120 mi/hr directed 0-0.5 below the horizontal. The touchdown process of the eight main wheels takes 0.6 sec to complete. Treat the aircraft as a particle and the estimated average normal reaction force at each wheel during this 0.6-sec process during which tires deflect, struts compress, etc. assume that the aircraft lift equals the aircraft weight during the touchdown)

At a certain instant, the particle of mass m has the position and velocity shown in the figure, and it is acted upon by the force F. Determine its angular momentum about point O and the time rate of change of this angular momentum. Use m = 1.7 kg, a = 0.70 m, b = 1.19 m, c = 0.61 m, and F = 140 N and v= 1.5 m/s. +- Answers: Ho = i H₂ = (i a b с m i+ i+ MI F i --y j+ i j+ i k) kg m²/s k) Nom