1800-150-456-789
FlagBACK
Flag Mechanics> A man stands on a platform that is rotati...
question mark

A man stands on a platform that is rotating with an angular speed of 1.22 rev/s; his arms are outstretched and he holds a weight in each hand. With his hands in this position the total rotational inertia of the man, the weights, and the platform is 6.13 kg· m2. If by moving the weights the man decreases the rotational inertia to 1.97 kg ∙ m2, (a) what is the resulting angular speed of the platform and (b) what is the ratio of the new kinetic energy to the original kinetic energy? Assume the platform rotates without friction.

Shane Macguire , 9 Years ago
Grade upto college level
anser 1 Answers
Navjyot Kalra

Last Activity: 9 Years ago

232-563_1.JPG

Provide a better Answer & Earn Cool Goodies

Enter text here...
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Ask a Doubt

Get your questions answered by the expert for free

Enter text here...

Other Related Questions on Mechanics

question mark
A metal strip clamped at one end vibrates with a frequency of 20 Hz and amplitude of 5 mmat the free end, where a small mass of 2 g is positioned. determine(i) The velocity of the end when passing through the zero position(ii) The acceleration at maximum displacement(iii) The maximum kinetic energy of the mass
Mechanics
2 Answer Available

Last Activity: 2 Year ago(s)

question mark
An object of mass m = 0.25 kg oscillates in a fluid at the end of a vertical spring of springconstant kH = 85 N/m, see Fig.1. The effect of the fluid resistance is governed by thedamping constant b = 0.07kg/s.(i) Find the period of the damped oscillation.(ii) By what percentage does the amplitude of the oscillation decrease in each cycle?
Mechanics
1 Answer Available

Last Activity: 2 Year ago(s)

question mark
If a=x² find the displacement at t =3sec if body velocity at t= 0 sec is 0
Mechanics
1 Answer Available

Last Activity: 2 Year ago(s)

question mark
A particle is traveling in a circle of radius R =2.5m and with an angular velocity of 10 rad/s. What is the centripetal acceleration of the particle? The particle begins to slow down with an angular acceleration of -1 rad/s2. After 5 seconds, what is the centripetal acceleration and the tangential acceleration fo the particle?
Mechanics
1 Answer Available

Last Activity: 2 Year ago(s)

question mark
If the acceleration of block A is 5 m/s^2Find the acceleration of block B
Mechanics
1 Answer Available

Last Activity: 2 Year ago(s)