Question

( left[24 a_{1}right]_{3} 2 m / 3 )
( a=-mu q=-2 m mid s^{2} )
"A step blodk find
( 0=2-2 t )
( t=1 ) it will comete
at i sec only. nest ( rightarrow )
( x=frac{u^{2}}{2 x 2}=1 m )
" Heat lals / gencuated
( =operatorname{limg} x )
( 0.2 times 2 times 10 times 1 )
45

# (1981,34 J = 4.2 J/cal). 9. A body of mass 2 kg is being dragged with a uniform vel of 2 m/s on a rough horizontal plane. The coefficient friction between the body and the surface is 0.20,J=4.21 and g = 9.8m/s². Calculate the amount of heat generate in 5 s. (1980, 51 10. In the figures (a) and (b) AC, DG and GF are fixed incline! planes BC-FE-rand AR-NE A amall hole

Solution