Center of Percussion of a Dumbbell

MediumPhysElo Quiz #3

18.Center of Percussion of a Dumbbell

+10

A rigid rod of length

L

is initially at rest on a frictionless horizontal surface. A sudden transverse impulse is delivered to the left end of the rod. Immediately after the impulse, the right end of the rod is observed to have a velocity of exactly zero. Which of the following could describe the mass distribution of the rod?

AA uniform solid rod of mass

M

BA solid rod of mass

M

whose linear mass density increases linearly from the left end to the right end

CA massless rod with a point mass

M/2

at its center and a point mass

M/2

at its right end

DA massless rod with a point mass

M/2

at its left end and a point mass

M/2

at its right end

EA massless rod with point masses

M/3

at its left end, its center, and its right end

to submit answers

ReportReport Issue

Solved by 3 solves

Daily Attempts

1 attempt per day · Resets at midnight UTC

Rules

📐Express numerical answers in SI units unless stated otherwise.

⌨️Type words like 'mu' or 'pi' to auto-render Greek letters.

➗Use '/' for fractions, '^' for exponents, and 'sqrt' for roots.

🔒Once submitted, answers cannot be changed.

⚡First correct solve earns bonus Quarks.

Discuss

Compare approaches with other solvers.

Open Discussion