Equations

Question 1

Equation for mechanical advantage?

Answer 1

Mechanical advantage = output force or load / input force or load

Question 2

Equation for velocity ratio?

Answer 2

Distance moved by effort / distance moved by load

Question 3

Equation for efficiency?

Answer 3

Output work or power / input work or power

Question 4

Equation for velocity ratio in a pulley system?

Answer 4

VR = diameter of the driven pulley / diameter of the driver pulley

Question 5

Equation for velocity ratio in a gear system?

Answer 5

VR = number of teeth on the driven gear / number of teeth on the driver gear

Question 6

Equation for velocity ratio in a screw Jack?

Answer 6

VR = 2nL / P

Question 7

Equation for velocity ratio in a wheel and axle?

Answer 7

Disaster of wheel / diameter of axle

Question 8

Equation for velocity ratio in a compound gear system?

Answer 8

Driven A / driving B x driven C / Driving D

Question 9

Equation for velocity ratio of torque in gears?

Answer 9

Torque at output / torque at input

Question 10

Equation for velocity ratio in a work gear?

Answer 10

Number of teeth on the work wheel / 1