Question

the velocity ration of a machine is 4. if this machine is used to lift a load of 800 N by 2 m using an effort of 60kg f then find efficeny of the machine

Answer 1

Step-by-step explanation:

• 3 is the velocity ratio of a simple machine of a mass 120 kg is lifted to a height of 5 meters by a force of 60 kg moving 15 meters. Thus, 3/1 is the ratio

Answer 2

Step-by-step explanation:

For what value of k,

$(4 - k) {x}^{2} + (2k + 4)x + 8k + 1 = 0$

is a perfect square