Question

The efficiency of a lifting machine is 80% and an effort 50N is required to a lift a load of 1 KN . Find the mechanical advantage and velocity ratio of the machine.

Answer 1

80% and an effort 50N is required to a lift a load of 1 KN . Find the mechanical advantage and velocity ratio of the machine.

Answer 2

Answer:

Mechanical adventage = 20

velocity ratio =20

Explanation:

The efficiency of a lifting machine is 80%

An effort 50N is required to a lift a load of 1 KN .

LOAD =1KN=1000 N

The mechanical advantage and velocity ratio of the machine IS

       $MECHANICAL ADVANTATAGE =\frac{LOAD}{EFFORT}$

                                                                    $=\frac{1000}{50}$

                                                                    =$20$

                  Mechanical adventage = 20

velocity ratio:

           velocity ratio is The ratio of the distance moved by the point at which the effort is applied in a simple machine to the distance moved by the point at which the load is applied, in the same time. In the case of an ideal (frictionless and weightless) machine, velocity ratio = mechanical advantage.

If a machine overcomes a load L distance travelled by the load is Ld. similarly ,the effort appliedd in the machine is E , distance travelled by the effort is Ed and T is the time taken .

 velocity of the load =$\frac{Ld}{T}$

  velocity of effort =$\frac{Ed}{T}$$\frac{velocity of effort}{velocity of load} =\frac{\frac{Ed}{T} }{\frac{Ld}{T} }$

 velocity ratio (VR)=$\frac{Ed}{Ld}$

  velocity ratio = mechanical advantage. so, VR= 20

The project code is #SPJ3