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As seen from above, a playground carousel is rotating counterclockwise about its center on frictionless bearings. A person standing still on the ground grabs onto one of the bars on the carousel very close to its outer edge and climbs aboard. Thus, this person begins with an angular speed of zero and ends up with nonzero angular speed, which means that he underwent counterclockwise angular acceleration. The carousel has a radius of 1.50 m, an initial angular speed of 3.14 rad/s, and a moment of inertia of125 kgm2. The mass of the person is 48 kg. Find the final angular speed of the carousel after the person climbs aboard
When the wavelength of wave remains unchanged, the scattering is known as elastic.
What do you mean by nuclear fission? Illustrate liquid drop model of nuclear fission? Difference between nuclear fission and nuclear fusion. State the properties of α, β, γ ra
Describe "Reverberation time" and "Absorption coefficient". Illustrate Sabine's formula for reverberation time in a closed auditorium.
Peltier effect (J.C.A. Peltier; 1834) The change in temperature generated at a junction among two dissimilar metals or semiconductors while an electric current flow through the
Action and reaction in a bolt Step from a free row boat to land and view that the boat moves in the opposite direction.
Using Gauss divergence theorem show that the volume of a sphere of radius 'r' is 4⁄3 πr 3 .
Friction of rough surfaces Place two pieces of sandpaper together. Notice the friction that is formed when one is rubbed against the other. Now put some grease among the pieces
A jogger runs at a constant rate of 10.0 m every 2.0 s. The jogger starts at the origin, and runs in the positive direction for 3600.0 s.The figure below is a position-time graph s
How to drive it?
A single fixed pulley Set up a one fixed pulley as shown in the diagram below. By means of weights see how much force is needed to lift weights of 25, 50, 75, 100 and 200 g. Ca
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