A woman pushes a lawn mower with a con-
stant force of 112 Newtons at an angle of
37degrees with respect to the horizontal. The lawn mower moves at a speed of 20 cm/sec.
What is her power output? (1 hp = 746

  1. 👍 0
  2. 👎 1
  3. 👁 893
  1. Fp = Fh = 112cos37 = 89.48N = Force parallel to the plane.

    Po = Fp*V = 89.48 * 0.2m/s = 17.9W.

    hp = Po/746 = 17.9 / 746 = 0.024.

    1. 👍 2
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    Two blocks are pushed along a horizontal frictionless surface by a force of 20 newtons to the right. The force acts on the 3 kg block, which in turn pushes the 2kg block sitting next to it. The force that the 2-kilogram block

  2. Physics

    A ball of mass m 5 1.80 kg is released from rest at a height h 5 65.0 cm above a light vertical spring of force constant k as in Figure P5.66a. The ball strikes the top of the spring and compresses it a distance d 5 9.00 cm as in

  3. physics

    A person pushes a 17.0 kg lawn mower at constant speed with a force of 74.0 N directed along the handle, which is at an angle of è = 48.0° to the horizontal (b) Calculate the horizontal retarding force on the mower (c) Calculate

  4. physics

    A person pushes a 14.0-kg lawn mower at constant speed with a force of F = 88.0 N directed along the handle, which is at an angle of 45.0º to the horizontal (Fig. 4–45). (a) Draw the free-body diagram showing all forces acting

  1. math:^]

    A lawn mower is pushed a distance of 100 ft. along a horizontal path by a constant force of 60 lbs. The handle of the lawn mower is held at a downward angle of 45 degrees toward the horizontal. Explain what each value listed in

  2. physics

    A gardener mows a lawn with an old-fashioned push mower. The handle of the mower makes an angle of 30 ∘ with the surface of the lawn. If a 50.0-N force is applied along the handle of the 15-kg mower, what is the normal force

  3. Physics

    A student pushes stright along the handles of a mower with a force of 200 N. The handles make a angle of 20°, with respect to the horizontal. The frictional force for the 25 kg mower is 100 N. What is the normal force on the

  4. physics

    Write the energy transformation equation for each situation Fireworks explodes An arrow is shot off a bow and flies through the air A paved driveway feels hot on a clear ,sunny day A camper raises an axe to chop a chunk of wood A

  1. physics

    A bookshelf is at rest in a room. A force of 35.0 newtons is applied to a bookshelf. If the floor imparts a frictional force of 2.90 newtons, what is the net force acting on the bookshelf? 37.9 newtons 32.1 newtons 33.1 newtons


    Two skaters, a man and a woman, are standing on ice. Neglect any friction between the skate blades and the ice. The mass of the man is 95 kg, and the mass of the woman is 55 kg. The woman pushes on the man with a force of 57 N due

  3. Math Problem Solving

    Jay and Mark run a lawn mowing service. Mark's mower is twice as big as Jay's, so whenever they both mow, Mark mows twice as much as Jay in a given time period. When Jay and Mark are working together, it takes them 4 hours to cut

  4. applied physics

    a gardener pushes a mower a distance of 900m in mowing a yard. the handle of the mower makes an angle of 40.0 degrees with the ground. the gardener exerts a force of 35.0 N alonf the handle of the mower. how much work does the

You can view more similar questions or ask a new question.