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Q. Three point masses each of mass m are connected by two thin rods each of mass M and length L. The central mass is at an origin and the z-axis is directed out of the page. a) Compute the center of mass vector r_com. b) Compute the moment of inertia about the z-axis. c)Use the parallel axis theorem and the results above to compute the moment of inertia about an axis that runs through the center of mass and parallel to the z-axis.
A .228g wires are stretched between two points 77.20 cm apart. The tension in the wire is 618N. Find the frequency of the first harmonic. Reply in units of Hz.
A certain freely falling object requires 1.85s to travel the last 31m before it hits the ground. From what height above the ground did it fall.
A baseball pitcher throws a fastball at a speed of 35m/s. The acceleration occurs as the pitcher holds the ball in his hand and moves it throughout an almost straight-line distance of 3.7 m. estimate the acceleration, assuming that it is constant ..
Compute the mass of a ball and speed of a puck after collision.
An undamped oscillator has period 0 = 1.000 seconds, but I now add a little damping so that its period changes to 1 = 1.001 seconds. What is the damping factor ? By what factor would the amplitude of oscillation decrease after 10 cycles.
A barge of mass 5x 10^4 kg is pulled along the Erie Canal by two mules, walking along towpaths parallel to the canal on either side of it. The ropes harnessed to the mules make angles of 45° to the canal.
approsimate the terminal speed of a wooden sphere (density 0.890 g/cm3) falling through air, if its radius is 9.00 cm and its drag coefficient is 0.500. (The density of air is 1.20 kg/m3.)
Find the coefficient of friction between ax and grindstone.Two negative point charges are separated by 20 rm cm and feel a mutual repulsive force of 3.35 mu N. The charge of one is three times that of the other. How much charge does each have.
A proton travels with the speed of 8.34×105 m/s at an angle of 32.3° with the direction of a magnetic field. The field exerts a force of 3.00×10-17 N on the proton. What is the strength of the field.
Suppose you do 457 J of work on 1.18 moles of ideal gas in a perfectly insulated container. By how much does the internal energy of this gas change.
What is the amplitude of the oscillations . Could you think of a simple method for determining the focal length of a converging lens.
Light passes through a 230 lines/mm grating and is observed on a 1.0m wide screen located 1.3m behind the grating. Three bright fringes are seen on both sides of central maximum.
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