Question

25.7) In the example problem with Indiana Jones and the boulder, would Indy have been better- or worse-off if the boulder were denser (larger m, but same R)? A) Better off (boulder moves slower, reaches bottom later) B) Worse off (boulder moves faster, reaches bottom earlier) C) No change (boulder reaches bottom at same time as example) 2gh Iсм 1+ mR2 25.8) In the example problem with Indiana Jones and the boulder, would Indy have been better- or worse-off if the boulder were larger (larger m and larger R)? A) Better off (boulder moves slower, reaches bottom later) B) Worse off (boulder moves faster, reaches bottom earlier) C) No change (boulder reaches bottom at same time as example) 2gh Vf= ICM 1+ mR2

Answer 1

In the expression for v_{​​​​​​f}​​​ , expression for Moment of inertia includes mass and square of radius same as in denominator, so both, mass and radius are cancelled so

25.7 (c) same

25.8 (c) same