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in the selection of the ram of a pile driver it is desired that the ram lose all of its kinetic energy at each blow
a particle is launched with a horizontal velocity v0 055 ms from the 30deg position shown and then slides without
a pendulum consists of two 32-kg concentrated masses positioned as shown on a light but rigid bar the pendulum is
at the point a of closest approach to the sun a comet has a velocity upsilona 188500 ftsec determine the radial and
compute the final velocities upsilon1 and upsilon2after collision of the two cylinders which slide on the smooth
determine the value of the coefficient of restitution e which results in the final velocity being perpendicular to the
pool ball b is to be shot into the side pocket d by banking it off the cushion at c specify the location x of the
the 5-oz pinewood-derby car is released from rest at the starting line a and crosses the finish line c 275 sec later
small objects are delivered to the 72-in inclined chute by a conveyor belt a which moves at a speedv1 12ftsec if the
the sliders a and b are connected by a light rigid bar of length l 05 m m and move with negligible friction in the
the system of the previous problem starts from rest with no slack in the cable what value of the tension t will result
determine the initial acceleration of the 15-kg block if a t 23 n and b t 26n the system is initially at rest with no
the collar a is free to slide along the smooth shaft b mounted in the frame the plane of the frame is vertical
the beam and attached hoisting mechanism together weigh 2400 lb with center of gravity at g if the initial acceleration
a heavy chain with a mass rho per unit length is pulled by the constant force p along a horizontal surface consisting
a jet airplane with a mass of 5 mg has a touchdown speed of 300 kmh at which instant the braking parachute is deployed
a projectile is launched from point a and lands on the same level at d its maximum altitude is h determine and plot the
a projectile is ejected into an experimental fluid at time t 0 the initial speed is v0 and the angle to the horizontal
an experimental fireworks shell is launched vertically from point a with an initial velocity of magnitude v0 100ftsec
a driver finds that her car will descend the slope theta1 3deg at a certain constant speed with no brakes or throttle
a train consists of a 400000-lb locomotive and one hundred 200000-lb hopper cars if the locomotive exerts a friction
reconsider the pickup-trucktrailer combination of the previous problem if the unit uniformly accelerates from rest to a
by itself the 2500-kg pickup truck executes a 0-100 kmh acceleration run in 10 s along a level road what would be the
the 300-mg jet airliner has three engines each of which produces a nearly constant thrust of 240 kn during the takeoff
what fraction n of the weight of the jet airplane is 15 the net thrust nozzle thrust t minus air resistance r required