Part 1. a uniform hoop rolls without slipping down a 10° inclined plane. what is the acceleration of the hoop's center of mass?
the moment of inertia of a uniform solid disk about an axis that passes through its center = mr².
the moment of inertia of a uniform solid disk about an axis that is tangent to its surface = 2mr².
part 2. a solid disk rotates in the horizontal plane at an angular velocity of 2.50×10−22.50×10−2 rad/s with respect to an axis perpendicular to the disk at its center. the moment of inertia of the disk is 0.12 kg. m2. from above, sand is dropped straight down onto this rotating disk, so that a thin uniform ring of sand is formed at a distance of 0.40 m from the axis. the sand in the ring has a mass of 0.50 kg. after all the sand is in place, what is the angular velocity of the disk? (in rad/s)
Answers: 1
Physics, 22.06.2019 12:50
The vapour pressure of benzene is 53.3 kpa at 60.6 °c, but it fell to 51.5 kpa when 19.0 g of a non-volatile organic compound was dissolved in 500 g of benzene. calculate the molar mass of the compound.
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Physics, 22.06.2019 19:30
Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.
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Physics, 22.06.2019 20:30
Four identical lab carts each have a mass of 200 kg. different masses are added to the carts and the velocities are measured. all carts move to the right.
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Physics, 22.06.2019 21:10
Select the best definition for wavelength. the height of an oscillating electromagnetic wave the rate at which electromagnetic waves oscillate. the distance between two crests of an electromagnetic wave. the oscillations of electric and magnetic fields select the best definition for frequency. the oscillations of electric and magnetic fields. the height of an oscillating electromagnetic wave. the distance between two crests of an electromagnetic wave. the rate at which electromagnetic waves oscillate
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Part 1. a uniform hoop rolls without slipping down a 10° inclined plane. what is the acceleration of...
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