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Q1. A weather vane at first at rest has a moment of inertia of 0.111 kg • m2 about its axis of rotation. A 53.0 g piece of clay is thrown at the vane and sticks to it at a point 19.5 cm from the axis. The initial velocity of the clay is 20.0 m/s, directed vertical to the vane. Find out an angular velocity of the weather vane just after it is struck.
Q2. When solids are dissolved in a liquid solid take up the spaces between the liquid molecules (the macroscopic volume of the liquid basically stays the same). If I have 2 containers and I dissolve 50 grams of NaCl in one and 50 grams of LiCl in the other, that container would provide the aluminium block with a greater buoyancy force (assume both completely dissolve)?
Find out the angular velocity at the beginning of the 4.60 interval; the angular acceleration of the flywheel.
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The flywheel of an engine has a moment of inertia 3.00 {rm kg} cdot {rm m} ^ {2} about its rotation axis. What is its final kinetic energy.
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A particle undergoes a displacement Δr of magnitude 57 m in a direction 25° below the x axis. Express Δr in terms of the unit vectors x and y.
The wind blows with a force of 425N north on a sail boat, while the water exerts a force of 325N west on the sailboat. Find out the magnitude and direction of the net external force on the sailboat.
What is the muzzle velocity
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