Chapter 16, Problem 25P

The uniform plank is initially at rest on the fixed support at A and the stationary drum at B. If the drum begins rotating slowly counterclockwise, determine how far the plank will travel before it comes to rest again. (Note: Because the drum rotates slowly, the inertia of the plank may be neglected.)

1372. The unbalanced wheel shown in Fig. P-1372 weighs 322 lb and has a maas radius of Kyrstion of 0.866 ft with respect to a horizontal Axin through its gravity center G. At the given instant, w- 3 rad per see and a- 6 rad per oc", both clockwise. If the heel does not alip, determine the value of P which ia directed parallel to the ineline. Ana. P- 251 lb 1373. If the unbalanced wheel described in Prob. 1372 starta from rest when at the posi- tion shown in Fig. P-1372 and does not alip, determine the initial angular neceleration cauned hy a pull P- 24O Ib.

If a horizontal force of P = 100 N is applied to the 300-kg reel of cable, determine its initial angular acceleration. The reel rests on rollers at A and B and has a radius of gyration of ko = 0,6 m. 0.75 m Select one: O A. a = 0.588 rad/s2 O B. a = 0.694 rad/s2 OC. a = 0.789 rad/s a = 0.656 rad/s2

Please don't provide handwritten solution....

Determine the balancing masses needed in planes P and Q to dynamically balance the rotor shown below, given that: m1=120g, at radius r1=50mm, and θ1= 90o , m2=60g at radius r2=62.5mm and θ2=0o. The distances are P-1=150mm, 1-2=150mm and 2-Q=150mm, respectively.

The radius of gyration of the 20-kg pulley about its mass center G is 300 mm. Compute the angular acceleration of the pulley and the tension in thecord AB.

The spool has mass, m, and a radius of gyration kG. An inextensible cord is attached to the wall at A. The cord is wound around the radius R and the outer radius 2R. The coefficient of friction between the spool and the ground is mu.  What it the critical force, Fcrit (force required to cause motion) applied at point B? If force= 2Fcrit what is the linear acceleration of the center of mass? If force= 2Fcrit what is the tension in cord AC?

on The spool has a mass of 100 kg and a radius of gyration of Kg = 200 mm about its center of mass G. If a vertical form determine the following: Hint: The coefficients of static and kinetic friction between the rail and the spool respectively are Ms = 0.3 pk = 0.25 300 mm G VP Choose... 8 Friction Force (N) Acceleration of point G (m/s²) 4 2.56 9.25 288 144 1.44 3.14 2.88 Mass moment of Inertia (kg.m²) Choose.... Choose... # 150 mm Choose...

Determine the reactions at the pin support and the applied moment if the bar of figure (shown below) has a mass of 50 g. If θ is 15° and the angular acceleration is 20 rad/s².