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Each of the bodies shown is homogeneous and has a mass of 30 kg. Assume friction at all contact surfaces. Draw the fully dimensioned FBD for each body and determine the number of unknowns.
A 3 m rod is rotating with an oscillating angular momentum given by sin(2t). If a small rocket with oscillating linear momentum 10-cos(2t) is fired at t = 0, at what time will it need to strike the rod in order to be in equilibrium?
An elastic (head-on) collision occurs between two objects. Object one has a mass of 23.9 kilogram and is initially moving to the right with a speed of 3.97 m/s. Find the magnitude and direction of velocity of object one after the collision
Two trains (1 and 2), each having a speed u are initially (i.e. t = 0) a distance d apart and are headed towards each other on the same track. Calculate the time at which the trains crash
At what angle should a curve of radius 190 m be banked, so cars can travel safely at 32 m/s without relying on friction?
Romeo is chucking pebbles gently up to Juliet's window, and he wants the pebbles to hit the window with only a horizontal component of velocity. he is standing at the edge of a rose garden 4.5 m below her window and 5 m from the base of the wall. How..
how do I find the magnitude of a magnetic and electric field at a certain time (The Erms and Brms are given as well as the period and intensity? What is the equation?
A billiard ball is moving in the x-direction at 30 cm/s and strikes another billiard ball moving in the y-direction at 40 cm/s. In what direction does the first ball move
A rifle bullet with a muzzle speed of 330 m/s is fired directly into a special dense material that stops the bullet in 25.0 cm. Assuming the bullet's deceleration to be constant, what is the magnitude
An airplane pilot wishes to fly due west. A wind of 88.0 km/h is blowing toward the south. What is the speed of plane over the ground in km/h.
Two pith balls are each suspended on two strings of equal length of 9.5cm from the same point. How many electrons were removed from each pith ball
When a certain 12-V storage battery is charged, a total of 10^5 C degrees is transferred from one set of its electrodes to the other set
A fountain has jets that squirt water in all directions at a speed of 16 ft/sec from a central point as shown. The dotted curve shows the boundary between the "dry" region (which the fountain doesn't reach) and the "wet" region reached by the wate..
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