A machine is operated by an effort of 80N acting downward and moving through a downward displacement of 015m - Physics - Machines

Question

A machine is operated by an effort of 80N acting downward and
moving through a downward displacement of 015m The load of mass
10kg is raised up by 10cm Calculate:1) mechanical advantage2)
velocity ratio 3)work input 4)useful work output 5)efficiency

Neha Gupta · Accepted Answer

MA = output forceinput force = loadeffort = 10080 = 10/8Velocity ratio = distance moved by effortdistance moved by load = 0
15 m10 cm  =3/2efficiency = MAVR = 10/83/2 = 10/12 = 5/6work input = input force×distance = 80×0
15 = 12 jwork out put = output force ×distance = 100×10/100 = 10 j

A machine is operated by an effort of 80N acting downward and moving through a downward displacement of 015m. The load of mass 10kg is raised up by 10cm. Calculate:1) mechanical advantage2) velocity ratio 3)work input 4)useful work output 5)efficiency