Recent content by Revan718

Thanks, my answer makes more sense now!

Homework Statement An electric motor operates at a steady state condition with a rotational speed of 850RPM while producing a constant torque of 5ft-lbf. A watt meter reads 700watts supplied to the motor. What is the output power at the motor shaft? What is the power lost in the motor which...

Shouldn't the acceleration be negative?

I tried using the equation: v^2=v(0)^2+2a(s-s(0)) and solved for a, resulting in a=25m/s^2 Is this correct?

Homework Statement An accident safety system uses a spring to absorb the energy of a car before the car collides with a bridge abutment. The vehicle has a mass of 1000kg and the design calls for stopping a car moving at 5m/sec (11.2 mi/hr) in 0.5m. Find the spring constant k Homework...