What is the amount of effort required to lift up 600N load by using a lever of one meter length whose fulcrum is 20cm far from load? Efficie

Question

What is the amount of effort required to lift up 600N load by using a lever of one meter length whose fulcrum is 20cm far from load? Efficiency=75%​

in progress 0
Thành Đạt 3 months 2021-08-25T17:17:45+00:00 1 Answers 1 views 0

Answers ( )

    0
    2021-08-25T17:19:18+00:00

    Answer: 112.5N

    Explanation: Given that the

    Load L = 600N

    Distance moved by load = 20cm

    Since the lever is one metre, the distance moved by the effort will be

    100 cm – 20cm = 80 cm

    Efficiency = 75%

    Efficiency of a machine is the ratio of the effort multiply by distance covered by the effort to the load multiply by the distance covered by the load as percentage.

    75/100 = (effort × 0.8)/ ( 600 × 0.2)

    Cross multiply

    80 effort = 9000

    Effort = 9000/80

    Effort = 112.5 N

    Therefore,  the amount of effort required to lift up the load is 112.5N

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )