1.6 Asmall block of mass 20 kg rests on a bigger block of mass 30 kg, which lies on a smooth horizontal planeInitially the whole system is at rest. The coefficient of friction between the blocks is 0.5. A horizontal force F- 50 N is applied on the lower block(a) Find the work done by frictional force on upper block and on the lower block in t- 2sec Ans.(40J, 40J)(b) Is the magnitude of work done by frictional force on upper and lower block same? Ans. Yes(c) Is the work done by frictional force on upper block converted to heat or mechanical energy or both?rm-F-50N Ans. work by friction on upper block is converted to its kinetic energy.30kg

1.6 Asmall block of mass 20 kg rests on a bigger block of mass 30 kg,

1.	1.6 Asmall block of mass 20 kg rests on a bigger block of mass 30 kg, which lies on a smooth horizontal planeInitially the whole system is at rest. The coefficient of friction between the blocks is 0.5. A horizontal force F- 50 N is applied on the lower block(a) Find the work done by frictional force on upper block and on the lower block in t- 2sec Ans.(40J, 40J)(b) Is the magnitude of work done by frictional force on upper and lower block same? Ans. Yes(c) Is the work done by frictional force on upper block converted to heat or mechanical energy or both?rm-F-50N Ans. work by friction on upper block is converted to its kinetic energy.30kg
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