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Two masses are connected by a light string that goes over a light, frictionless pulley. The 8.5-kg mass m1 is released and falls through a vertical distance of h = 1.87 m before hitting the ground. Use conservation of mechanical energy to determine:
a) how fast the 2.1-kg mass m2 is moving just before the 8.5-kg mass hits the ground; and
b) the maximum height attained by the 2.1-kg mass.
A 66 N m torque acts on a wheel with a moment of inertia 175 kg m2. If the wheel starts from rest, how long will it take the wheel to make one revolution? The system is released from rest and accelerates under the weight of m2.
Explain how far x can a man who weighs 447 n from the right support which is 1.1 m from the right side of the board before the board tips?
A 2m long pendulum with a mass of 250gr collides with a 95gr sticky ball seating in the pendulum's path and at the edge of a horizontal surface. The collision takes place while the pendulum is passing by its lowest point.
Calculate the maximum allowable force that can be applied to stop a 1000 kg vehicle if the maximum allowable acceleration is 2.5 g.
While an elevator of mass 824 kg moves downward, the tension in the supporting cable is a constant 7736 N, What is the elevator's speed at t = 4.10 s
A 1.7 kg rolling hoop with a radius of 9 cm rolls without slipping. If the angular speed of the hoop is 2.46 rad/s , compute rotational kinetic energy of the rolling hoop
The temperature of the air in a resonator is 15°C, when a tuning fork vibrates at one end, the spacing between tow successive resonances is found to be 50 cm. find the frequency of the tuning fork.
An air molecule is moving at a velocity of 444 m/s. How various meters would the molecule move during 7.00 ms (milliseconds) if it didn't collide with any other molecules.
illuminate the object with the flashlight. One way to produce artificial gravity in a space station is to spin it.
a mass of 200 g vibrates horizontally in Simple Harmonic Motion with a frequency of 30 Hz and amplitude 20 cm. calculate the total energy of the motion
A particle of charge +1.5 nC is placed at a corner of a Gaussian cube with sides 12.0cm. What is an electric flux through the cube.
A jogger jogs around a circular track with the diameter of 325 m in 16 minutes. What was the jogger's average speed in m/s.
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