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A 9.14-m ladder with a mass of 24.2 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 254 N. At the instant the top of the ladder leaves the ground, the ladder experiences an angular acceleration of 1.92 rad/s2 about an axis passing through the bottom end of the ladder. The ladder's center of gravity lies halfway between the top and bottom ends.
(a) What is the net torque acting on the ladder?
(b) What is the ladder's moment of inertia?
A bullet is fired from at a shooting range. The bullet hits the ground after 0.32 seconds. How far did it travel horizontally and vertically in this time
A 5.0 kilogram block is experiencing an applied 3.0 newton force in the positive x direction and is held stationary by an opposing frictional force, Determine the magnitude of the normal force
A 7.9-N force pulls horizontally on a 1.6-kg block that slides on a smooth horizontal surface. What is the acceleration of the blocks
A 42.00kg pole vaulter running at 13 m/s vaults over the bar. Her speed when she is above the bar is 1.3 m/s. Avoid air resistance, in addition to any energy absorbed by the pole, and determine her altitude as she crosses the bar.
A 70 kg astronaut floating in space in a 110 kg MMU (manned maneuvering unit) experiences an acceleration of 0.029 m/s2 when he fires one of the MMU's thrusters. What is the thrust of the thruster
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A resistance thermometer using a platinum wire is used to measure the temperature of a liquid. The resistance of is 2.42ohms at 0 degrees, calculate the temperature of the liquid
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A number of people are riding in a hot-air balloon. The combined mass of the people and balloon is 281 kg. The balloon is motionless in the air, since the downward-acting weight of the people and balloon is balanced by an upward-acting 'buoyant' f..
A 2-kg book with no initial velocity slides down an inclined plane with an angle of 20 degrees a total of 2 meters. The force of friction does 10 Joules of work, what is the final kinetic energy of the system as the book reaches the bottom of the ..
Assuming each quadrant of the pizza to be the same, find the center of mass of the uneaten pizza above the axis
Find out the magnitude and direction of the displacement
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