[" 57.The lengths of smooth "&" rough inclined planes "],[" of inclination "45^(@)" is same.Times of sliding of "],[" a body on two surfaces is "t_(1),t_(2)" and "mu=0.75,],[" then "t_(1):t_(2)=],[" 1) "2:1quad " 2) "2:3quad " 3) "1:2quad " 4) "3:2]

The lengths of smooth and rough inclined planes of inclination 45^(deg) is same.Times of sliding of a body on two surfaces are t_(1),t_(2)and mu=0.75

The lengths of smooth & rough inclined planes of inclination 45^(@) is same Times of sliding of a body on two surface t_(1)t_(2) and mu =0.75 then t_(1):t_(2)= .

A ring takes time t_(1) in slipping down an inclined plane of length L, whereas it takes time t_(2) in rolling down the same plane. The ratio of t_(1) and t_(2) is -

A ring takes time t_(1) in slipping down an inclined plane of length L, whereas it takes time t_(2) in rolling down the same plane. The ratio of t_(1) and t_(2) is -

An object takes 1 second to slide down a rough 45^(@) inclined plane. The time taken to slide down a smooth 30^(@) inclined plane having the same slope length is ( mu = 0.5 )

A block released from rest from the tope of a smooth inclined plane of angle of inclination theta_(1) = 30^(@) reaches the bottom in time t_(1) . The same block, released from rest from the top of another smooth inclined plane of angle of inclination theta_(2) = 45^(@) reaches the bottom in time t_(2) . Time t_(1) and t_(2) are related as ( Assume that the initial heights of blocks in the two cases are equal ).