Posted by Claire on .
A 2hp motor drives a sanding belt. If the efficiency of the motor is 87% and that of the sanding belt 75% due to slippage, what is the overall efficiency of the system?
The answer has to be 65.25%. Can someone please help me to work it out?

Physics 
bobpursley,
The final efficiency is the product of the input efficiencies. What is .87*.75?

Physics 
Mohammed,
A 2hp motor drives a sanding belt. If the efficiency of the motor is 87% and that of the sanding belt 75% due to slippage, what is the overall efficiency of the system?