Figure 3 shows a pendulum (a 2m long massless string suspended from the ceiling, on the other end of which is a 50g mass) at an initial release angle and initial velocity (see figure). a. What angle is the pendulum at (as measured from the dotted vertical line in figure 3) when it's at rest? b. Go to figure 3 and label the places where KE is maximum, KE is minimum, PE is maximum, and PE is minimum. c. How much work does gravity do, from the point when the pendulum is released in figure 3 to the point when it is at rest in part a? d. Find the magnitude of the impulse on the pendulum, again between the point when the pendulum was released (figure 3) and the point when it is at rest.

Figure 3 shows a pendulum (a 2m long massless string suspended from the ceiling, on the other end of which is a 50g mass) at an initial release angle and initial velocity (see figure). a. What angle is the pendulum at (as measured from the dotted vertical line in figure 3) when it's at rest? b. Go to figure 3 and label the places where KE is maximum, KE is minimum, PE is maximum, and PE is minimum. c. How much work does gravity do, from the point when the pendulum is released in figure 3 to the point when it is at rest in part a? d. Find the magnitude of the impulse on the pendulum, again between the point when the pendulum was released (figure 3) and the point when it is at rest.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter2: Axially Loaded Members

Section: Chapter Questions

Problem 2.8.10P: A bumping post at the end of a track in a railway yard has a spring constant k = 8.0 MN/m (see...

See similar textbooks

Similar questions

A bumper for a mine car is constructed with a spring of stiffness k = 1120 lb/in. (see figure). If a car weighing 3450 lb is traveling at velocity v = 7 mph when it strikes the spring, what is the maximum shortening of the spring?
A bumping post at the end of a track in a railway yard has a spring constant k = 8.0 MN/m (see figure). The maximum possible displacement d or the end of the striking plate is 450 mm. What is the maximum velocity vmaxthat a railway car of weight W = 545 kN can have without damaging the bumping post when it strikes it?
Repeat Problem 2.5-9 for the flat bar shown in the figure but assume that and that
Repeat Problem 6.4-14 but use the configuration of channel shapes and loading shown in the figure. Use P = 250 N.
Repeat 1.3-9 but use the method of sections go find member forces in AC and BD.
Repeat Problem 3.3-1, but now use a circular tube with outer diameter d0= 2.5 in. and inner diameter di= 1.5 in.
The shaft in the figure, carrying three unbalanced masses, is rotating at a constant speed hızla = 10 r / s. Find the balancing values (kg.mm) and their positions in case of balancing in DI and DII planes.
Mechanical Vibrations Problem: A cylinder of mass m and mass moment of inertia J0 is free to roll without slipping but is restrained by two springs of stiffnesses k1 and k2, as shown in the figure. a) Find its natural frequency of vibration. b) Find the value of a that maximizes the natural frequency of vibration.
A crane that is 10 meters long is rotating (while loaded), at 1 radians/sec. It is stopped instantly (in 0.1 radian) in the position shown. Due to momentum the load continues to swing. Ignoring the deflection of the crane for this problem. (list all assumptions). The load is 750 lbs. a) The weight of the 10 m crane boom is 3000 lb and the mass moment of inertia is 80 lb ft s^2 about the centroid. Using the parallel axis theory find the mass moment of inertia around the point of rotation. b) What forces and moments are there on the boom at the point of rotation?
A pulley 610 mm diameter is driven at 300 revs/min by a belt, the tensions in the tight and slack sides of the belt being 670 N and 270 N. Find the power transmitted.
You make a conical pendulum (Figure 1) using a string of length 0.900 m and a bob of mass 0.350 kg. When the bob is moving in a circle at a constant speed, the string is at an angle of 10.0∘ from the vertical. What is the radius of the circle around which the bob moves? How much time does it take the bob to complete one circle? What is the tension in the string?
The system in the figure consists of AB copper bars with a diameter of 30 mm and BC aluminum bars with a diameter of 22 mm.The modulus of elasticity of copper is 110 GPa and that of aluminum is 75 GPa. Find the displacement of the point C with respect to the given.