physicshelpline - Question of the day , NLMphysicshelpline - Question of the day , NLMhttps://www.physicshelpline.com/Question/nlmSat, 20 Jun 2026 14:22:13 +0530http://zoho.com/sites/<![CDATA[Sliding down the curved path]]>https://www.physicshelpline.com/Question/post/sliding-down-the-curved-path

Q- A bead slides down along a frictionless stiff wire of length L which is bent in form of a serpentine coil of length L/2 and placed vertically as in figure. What is the slide time to reach the ground? The gap between the turns is much less than the length of the wire.


Solution:

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              Q- A 5 kg uniform ball lies between two mutually perpendicular smooth planes AB and BC. Determine the thrust of the ball against each plane if plane BC is inclined at 60 degree to the horizontal. (g = 10 m/s2)


]]>Sat, 28 Feb 2026 10:30:46 +0530<![CDATA[Conservation of linear momentum]]>https://www.physicshelpline.com/Question/post/conservation-of-linear-momentum

Q- A solid cylinder, of radius c acted upon by no forces, moves parallel to its axis through a uniform cloud of fine dust, of volume density ρ, which is at rest. If the particles of dust which meet the cylinder adhere to it, and if m0 and u be the mass and the velocity at the beginning of the motion, find the distance x traversed in time t by the cylinder.

Solution:

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