t/Explall ough its rim and f ut this axis greater tha tiaif inertia about its ax

Question

t/Explall ough its rim and f ut this axis greater tha tiaif inertia about its axle? (b) Choose the following: tia is greatest when an object is rotated rotational n the same. 55. . A lawn mower has a f about its center. The mass of the bld 0.55 m. (a) What is the rotational energy of t ated about is s? lar speed of 3500 rpm? (b) If all of the rotati e could be converted to gravitational potent 7) An object with a 20.0 m3 volume floats in water with 85.0% of its volume submerged-What is the densify of the object? (Answer: = 0.85×103 kg/m 3) 1 the blade rise?

Explanation / Answer

Here ,

V = 20 m^3

let the density of the object is p

pw = 1000 Kg/m^3

for the object to float

bouyant force = weight of the block

0.85 * 1000 * 20 * 9.8 = p * 20 * g

p = 850 Kg/m^3

the density of the object is 850 Kg/m^3

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