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A 100.0 g mass is hung from a spring. A measurement is taken by using a ruler placed next to the spring to measure the position of the bottom of the mass carrier. This reads 55.0 cm. A additional mass of 57.0 g is added to the spring. The position of the end of the spring is now measured to be 58.2 cm.
a) What is the spring constant for this spring?
b) Another mass of 52.0 g is added to the spring. What is the reading on the ruler now?
b) The hanging mass (with both the additional masses still present) is pulled down a short distance and released. What is the frequency of the oscillations of the hanging masses?
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A 70.0 kg box is pulled by a 500N force at an angle of 30degrees to the horizontal. The friction is 30.0 N. Write the Newton's 2nd Law equations for the sum of the forces inboth the X and Y direction. What is the acceleration of the box?
What is the terminal speed for a 76.0 skier going down a 41.0 snow-covered slope on wooden skis = 0.070? Suppose that the skier is 1.80 m tall and 0.500 m wide. Replace mg with net forces parallel to the incline.
A simple pendulum consists of a small object of mass 3.0 kilogram hanging at the end of 2.0 meter long light string that is connected to a pivot point. Find the magnitude of the torque (due to the force of gravity) about this pivot point
the new river gorge bridge in west virginia is a 518 m long steel arch. how much will its length change between
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in may 2008 the united states successfully landed a spacecraft named phoenix near the northern polar regions of mars.
a closely wound rectangular coil of 90 turns has dimensions of 20.0cm by 44.0cm. the plane of coil is rotated from a
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Electrons in a photoelectric effect experiment emerge from a copper surface with a maximum kinetic energy of 1.10eV. What is the wavelength of the light? Answer must be in nm units.
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