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An 18-cm-long bicycle crank arm, with a pedal at one end, is attached to a 20-cm-diameter sprocket, the toothed disk around which the chain moves. A cyclist riding this bike increases her pedaling rate form 60 rpm to 90 rpm in 10 s.
a. What is the tangential acceleration of the pedal?
b. What length of chain passes over the top of the sprocket during this interval?
A spinning object has a moment of inertia of 1.6 kg*m2. It is rotating at a rate of 1rad/s. If the moment of inertia increases to 3 kg*m2, what is the new rotational velocity
A sled weighing 100N is held in place on a frictionless 20 degree slope by a rope which is attached to a stake at the top. What is the normal force of the slope acting on the sled
An astronaut who is repairing the outside of her spaceship accidently pushes away a 90.5-cm-long steel rod, What is the magnitude of the EMF, in millivolts, induced between the ends of the rod
A 3-kilogram block slides along on a frictionless surface at 6 m/s north and strikes an obstacle that exerts an impulse on the block of 9 N-s to the south
Find out the shear strain that results if a force of magnitude 5.00×105 is applied to the top square face of the plate, parallel to the side, and a force of equal magnitude is applied in the opposite direction to the bottom face of the plate as s..
An elastic cord is 65 cm long while a weight of 56 N hangs from it and is 82 cm long while a weight of 84 N hangs from it. What is the spring constant of this elastic cord.
An RL circuit consists of a switch, an emf source Eo, a 4 kΩ resistor, and a 5 H inductor. If the potential across resistor is 16 V 5 ms after switch is closed, find out the source emf, Eo.
A uniform disk of mass .53kg and radius 11cm is constrained to rotate on an axis about its center. find the KE attained by the system
While moving down the track at 10.0 m/s, you uniformly accelerate to 27.0 m/s in 10 s. Illustrate what is the average net force that you have applied to the car during the 10 s interval?
A bead with a mass of 0.050g and a charge of 20nC is free to slide on a vertical rod. At the base of the rod is a fixed 10nC charge. In equilibrium, at what height above the fixed charge does the bead rest?
A conical pendulum is formed by attaching a 0.400kg ball to a 1.00m -long string, then allowing the mass to move in a horizontal circle of radius 40.0cm, What is the ball's angular velocity, in rpm
A 0.14 kg sphere hangs on a string from the ceiling of a car that is accelerating horizontally at a constant rate. What is the magnitude of the net force on the sphere
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