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A 15.5 kg mass vibrates in simple harmonic motion with a frequency of 7.9 Hz. It has a maximum displacement from equilibrium of +14 cm at time, t = 0.00 s. What is the position of the mass at time, t = 0.35 s?
And when an object vibrates in simple harmonic motion in the vertical direction, where does its minimum speed occur? (at the highest endpoint, lowest endpoint, at both end points or at the equilibrium endpoint?)
A 3 m long rigid beam with a mass of 115 kg is supported at each end. An 60 kg student stands 2 m from support 1. How much upward force does each support exert on the beam.
What does the ammeter read? What does the voltmeter read?
A curling stone, with a mass of 20.0 kg, slides across the ice at 1.50 m/s. It collides head on with a stationary 0.160-kg hockey puck. What is the stone's final velocity
what is the force of kinetic friction acting on the skier. avoid the length of her car and her reaction time.
You are told that the linear "drag coefficient" due to air resistance for a particular object is 0.32 N · s/m, Find the magnitude of the terminal velocity of this object when dropped from rest
A rescue helicopter lifts a 60 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2, How much work is done by the person's weight
question a block of mass 5 kg lies on a horizontal table. the block is at rest. the only forces acting on the block are
A student sitting on a frictionless rotating stool has rotational inertia 0.90 kg*m^2 about a vertical axis through her center of mass when her arms are tight to her chest. The stool rotates at 6.80 rad/s and has negligible mass.
A bungee jumper falls for 1.3 s before the bungee cord beginsto stretch. How far below the diving platform is the jumper at that moment
A bullet of mass 4.3 g is fired horizontally into a 8.60 kg wooden block at rest on horizontal surface. The coefficient of kinetic friction between block and surface is 0.13.
An explosive at ground level leaves a crater with a diameter that is proportional to the energy of the explosion raised to the (1/3) power; an explosion of 1 megaton of TNT leaves a crater with a 1 km diameter.
A ball of mass 0.113 kg is dropped from a height of 1.92m above ground. The acceleration of gravity is 9.8m/s^2.Neglecting air resistance find the speed of the ball when it is at a height of 0.812 m above the ground. Answer in units of m/s.
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