1.

A hollow hemispherical bowl of mass m radius R is placed on a smooth horizontal surface. A particle (also of mass m) strikes the hemi spherical bowl at point P and sticks to it. the velocity of particle just after the collision in vertically upwards direction is (ku)/25, where k is an integer. Find k.

Answer»


SOLUTION :`V_(y)=omega X COSTHETA=(omegaR)/2`
Using CONSERVATION of angular momentum about centre of mass.
`"mu" R/4={2/3mR^(2)-(mR^(2))/4+(5mR^(2))/16}omega+(5mR^(2))/16 omega`
`=25/24mR^(2)omega`
`impliesomega=(6U)/(25R)`
`impliesV_(y)=(3u)/25`


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