Physics-
General
Easy
Question
Inside a uniform sphere of mass M and radius R, a cavity of radius R/3 is made in the sphere as shown
- Gravitational field inside the cavity is uniform.
- Gravitational field inside the cavity is non–uniform.
- The escape velocity of a particle projected from point A is
.
- Escape velocity is defined for earth and particle system only.
.
The correct answer is: The escape velocity of a particle projected from point A is .
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The figure shows a uniform smooth solid cylinder A of radius 4 m rolling without slipping on the 8 kg plank which in turn is supported by a fixed smooth surface. Block B, is known to accelerate down with 6 m/s2.
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