10. How much total work do you do when you lift a 50 kg microwave 1.0 m off the ground and then push it 1.0 m across a counter with a

Question

10. How much total work do you do when you lift a 50 kg microwave 1.0 m off the ground and then push it 1.0 m
across a counter with a force of 50 N?

in progress 0
Vodka 5 months 2021-09-05T10:28:16+00:00 1 Answers 6 views 0

Answers ( )

    0
    2021-09-05T10:30:07+00:00

    Work formula:

    W = Fd\cos(\theta)

    F = 50N, d = 1.0 m

    When you lift something straight up, the angle of the force is 90º

    cos(90º) is 0, so there’s no work done when you lift the microwave off the ground

    W = (50N)(1.0)(0) = 0

    F = 50N, d = 1.0 m

    When you push the microwave, the angle is 0º and cos(0º) is 1. So there is work done here:

    W = (50 N)(1.0m)(1)

    W = 50

    total work = 50 joules

Leave an answer

Browse

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