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Your roommate is working on his bicycle and has the bike upside down. He spins the 64 -diameter wheel, and you notice that a pebble stuck in the tread goes by three times every second. what is the pebble's speed and acceleration?
A spring with stiffness 125 N/m and relaxed length 0.50 m hangs vertically from the ceiling. what is the maximum stretch of the spring
A heavy-duty stapling gun uses a 0.164 kg metal rod that rams against the staple to eject it. The rod is pushed by a stiff spring called a "ram spring" (k = 30071 N/m). find the speed of the ram at the instant of contact
Consider a simple pendulum of length l and mass m placed in a rail-road cart that has constant acceleration a in the positive x-direction.
A ball of mass 0.40 kg has a kinetic energy of 28.8 J. What is the magnitude of the linear momentum of the ball
The height of the haystack is 1 meter. You press down on topof the stack and discover that to compress the stack by 25cm, What is the haystack's spring constant
A 4.0 kg block is on horizontal table attatched to a 6.0 kg block hanging from frictionless pulley. what is the acceleration of the system
In a collision between a car of mass 1000 kg and a pickup truck of mass 1600 kg, the truck is initially at rest and the car is moving with a velocity 21 m/s. Immediately after the collision, the car is moving with a velocity 2.0 m/s in the same di..
A 1-cm-thick layer of water stands on a horizontal slab of glass. After entering the glass, what is the ray's angle from the normal
Two 0.20-H inductors and one 0.44-H inductor are connected in series across the terminals of a 60.0-Hz ac generator. What is the total inductive reactance of this circuit
an astronomical telescope is used to project a real image of the moon onto a screen 32 cm from an ocular of 6 cm focal
A 4.0kg block is suspended from a spring with force constant of500N/m. Find the amplitude of the resulting simple harmonic motion
Two cars, A and B, travel in a straight line. The distance of A from the starting point is given as a function of time by XA (t)=at+Bt^2, Which car is ahead just after they leave the starting point
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