Two forces act on a slender bar that is pinned at (see attachment). The horizontal reaction at 0 is 5 lb to the right, the force F in lb is closes to which answer choise?
a) 25
b) 30
c) 15
d) 27

A simple pendulum consists of a bob of mass 1.8 kg attached to a string of length 2.3 m. The pendulum is held at an angle of 30 Degrees from the vertical by a light horizontal string attached to a wall, as shown above.
1. Calculate the tension in the horizontal string.
2. The horizontal string is now cut close to the bob,

In the expression for the period of a simple pendulum, we do not take into account the mass that is hanging from the string. How is it possible that the mass does not affect the period of the pendulum? It was stated that the displacement that started the pendulum was small. What would happen if we started the pendulum with an ex

A double pendulum consists of a pendulum of mass m2 hanging from a pendulum of mass m1. The motion of both parts of the double pendulum is constrained to the x-y plane. Both strings are "unstretchable" and having length I2 and I1, respectively.
a) How many degrees of freedom does this system have?
Using the variable theta1

Please go to the word document, which includes a graph and explains better. It should be much easier to understand it on word.
A mass M1 on a frictionless plane is connected to a support O by a spring of stiffness k. Mass M2 is supported by a string of length l from M1.
a. What are the forcesacting on M1 and M2?
b. By a co

The equation of motion for a damped linear pendulum is
(d^2?/dt^2)+2?(d?/dt)+Ï?^2?=0
where Ï?=sqrt(l/g) and ? are positive constants, with l the length of the pendulum and g gravity. If l=1, g=9.81 and ?=1/4 and ?(0)=3, how long does it take the pendulum swinging from rest to reach the position ?=0. How long does it take to

A 102-gram airplane is attached to a string with a length of 1.0 meters. if it flies in a circle in which the string is declined at angle (theta) of 39.8 degrees below the horizontal at what speed is the plane flying?

A torture technique used by inquisition included a pendulum with attached blade. The length and mass of the wooden rod are L=5m and M=10kg, and the steel disk blade has m=30kg and radius R=30cm. While the pendulum swings, the whole system moves vertically down at a rate of 1mm/min. Considering that the pendulum has a small amp

The pendulum in a grandfather clock is made of brass and keeps perfect time at 18.1 degree C. How much time is gained or lost in a year if the clock is kept at 24.3 degree C? Assume the frequency dependence on length for a simple pendulum applies. Enter a positive number for a gain, negative for a loss.