Question

(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

JEE/Engineering Exams

Physics

Solution

126

4.0 (1 ratings)

( 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