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a rod (length 3 meters, mass 1 kg) is pinned at its end so the stick can rotate freely in a plane parallel to a tabletop. a force of 12 N acts at an angle of 30 degrees with respect to the rod. as a result the rod gas an angular acceleration of 2/3 rad/s. Where along the rod is the force applied? Express this distance with respect to the axis of rotation.
In adding, the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57 N. Find out the acceleration of the sled and child.
A cannonball is launched from ground level and lands at ground level. If it is launched with a speed of 76.2 m/s and stays in the air for 6.4 s, What angle was the cannon shot at
Use conservation of energy to calculate the speed of the alpha particle at infinity. m/s (e) If the two protons are released from rest and the alpha particle remains fixed, calculate the speed of the protons at infinity. m/s
q1. planet zero has a mass of 5.0 acute 1023 kg and a radius of 2.0 acute 106 m. a space probe is launched
Find out the tension in the rope
The period of a physical pendulum is measured first at sea level, where the pendulum completes 100 cycles in 1561 s, and then on a mountaintop, find the height of the mountain
If a person radiates about 66 W of power at room temperature, how long does it take for person to radiate away the energy acquired by consuming a 230 Calorie doughnut.
q1. a 245 ball is tied to a string. it is pulled to an angle of 5.20 and released to swing as a pendulum. a student
A novice skier, starting from rest, slides down a frictionless 41.0 incline whose vertical height is 230.How fast is she going when she reaches the bottom.
A 0.20-kg baseball is dropped and reaches a speed of 1.0 m/s just before it hits the ground. What is the change in the ball's momentum
The flywheel of a motor has a mass of 300 kg and a moment of inertia of 580 kg*m^2 The motor develops a constant torque of 2000 N*m and the flywheel starts from rest. How much work is done by the motor during the first 4.00 revolutions
A 42.0-kg child swings in a swing supported by two chains, each 3.05 m long. The tension in each chain at the lowest point is 345 N. Find the child's speed at the lowest point
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