Physics

15. A refrigerator weighing 1500 N is to be lifted onto a truck bed that is 1.0 m above the
ground. When pushed up a slanting ramp 2.0 m in length a force parallel to the ramp of
only 800 N is required to move it at constant velocity. Comparing the work involved in
lifting the refrigerator straight up to the work in pushing it along the ramp, there is
A) more work required when the ramp is employed.
B) an equal amount of work is required in each case.
C) less work required when the ramp is employed.

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
  1. W=Fd

    Lifting:

    w=(1500)(1)
    w= 1500

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  2. W=Fd

    Lifting: Ramp:

    w=(1500)(1) w= (800)(2)
    w= 1500 w= 1600

    1500<1600; more work using ramp
    Answer: a

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    A pickup truck is carrying a toolbox, but the rear gate of the truck is missing, so the box will slide out if it is set moving. The coefficients of kinetic and static friction between the box and the bed of the truck are 0.340 and

  2. Physics

    A box rests on the back of a truck. The coefficient of static friction between the box and the bed of the truck is 0.300. (a) When the truck accelerates forward, what force accelerates the box? (b) Find the maximum acceleration

  3. physics

    how do i do this A force of 230 N applied on a hydraulic lift raises an automobile weighing 6500 N. If the applied force is exerted on a 7.0 m^2 piston, what is the area of the piston beneath the automobile? a. 2.0 * 10^2 m^2 b.

  4. science

    A truck whose bed is 2.5m long, 1.5m wide,and 1m high delivering sand fro a sand-sculpture competition. How many trips must the truck make to deliver 7 cubic meters of sand?

  1. engineering physics 1-science

    A crate of mass m(=32 kg) rides on the bed of a truck attached by a cord to the back of the cab . The cord can withstand a maximum tension of 68N before breaking. Neglecting friction between the crate and the truck bed, find the

  2. Physics

    You are unloading a refrigerator from a delivery van. The ramp on the van is 5.0m long and its top end is 1.4m above the ground. As the refrigerator moves down the ramp, you are on the downside of the ramp trying to slow the

  3. Physics

    What happens to the momentum of the truck if sand leaks at a constant rate through a hole in the truck bed while the truck maintains a constant velocity?

  4. physics

    A tow truck is connected to a 1500 kg car by a cable that makes a 27 degree angle to the horizontal. If the truck accelerates at 0.58 m/s^2, what is the magnitude of the cable tension? Neglect friction and the mass of the cable.

  1. Physical Science

    Two objects were lifted by a machine. One object had a mas of 2 kilograms, and was lifted at a speed of 2 m/sec. The other had a mass of 4 kilogram was lifted at a rate of 3 m/sec. ------------------------------------------- a)

  2. Physics

    A 35 kg box rest in the bed of a truck. The coefficient of static friction between the box and the truck bed is 0.30 and the coefficient of friction of kinetic friction is 0.10. A) Calculate the maximum acceleration the truck can

  3. physics

    A crate of eggs is located in the middle of the flat bed of a pickup truck as the truck negotiates an unbanked curve in the road. The curve may be regarded as an arc of a circle of radius 36.5 m. If the coefficient of static

  4. physics

    Q2. A box rests on the (frictionless) bed of a truck. The truck driver starts the truck and accelerates forward. The box immediately starts to slide toward the rear of the truck. Discuss the motion of the box, in terms of

View more similar questions or ask a new question.