Question
Asked Dec 19, 2019
6 views

Why does the force of gravity does no work on a car that rolls down a hill but no work when it rolls along a level part of the road?

check_circle

Expert Answer

Step 1

Actually there is a small mistake in the given question. The question is the force of gravity does work on a car that rolls down a hill but no work when it rolls along a level part of the road.

Step 2

The work done by the car is

help_outline

Image Transcriptionclose

W = F·d = Fd cose = mg cos e F is the force, d is the displacement, O is the angle between the force and the displacement

fullscreen
Step 3

As the car rolls down a hill, the angle between the direction of the force and the displacement i...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Science

Physics

Work,Power and Energy

Related Physics Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: A rotating wheel requires 3.00 s to rotate 37.0 revolutions.Its angular velocity at the end of the 3...

A: Write the expression for the angular velocity of the wheel.

question_answer

Q: Why does one get tired when pushing against a stationary wall when no work is done on the wall?

A: Work done can be calculated as the product of the displacement and the force applied.

question_answer

Q: The metal sphere of a small Van de Graaff generator illus- trated in Figure 15.23 has a radius of 18...

A: The maximum potential of the sphere can have before breakdown occurs is

question_answer

Q: A change in temperature of 50°C is equal to a change of?

A: Change of temperature in degree Celsius and kelvin is same.For example

question_answer

Q: If you toss a textbook into the air, rotating it each time aboutone of the three axes perpendicular ...

A: Step 1 Moment of inertia is the tendency of a body to resist angular acceleration.The textbook is to...

question_answer

Q: A mouse is initially at rest on a horizontal turntable mountedon a frictionless, vertical axle. As t...

A: Since the axle of the turntable is frictionless, no external agent exerts a torque about this vertic...

question_answer

Q: 3.00 µF 6.00 uF 2.00 µF 4.00 µF For the system of capacitors shown in Figure P16.41, find (a) the eq...

A: Given:Capacitors of capacitanceC1 = 3 μFC2 = 6 μFC3 = 2 μFC4 = 4 μFPotential = 90 V

question_answer

Q: A rifle with a weight of 30.0 N fires a 5.00 - g bullet with a speedof 3.00 x 102 m/s. (a) Find the ...

A: Given:Weight of the rifle = 30 NMass of the bullet = 5 g

question_answer

Q: Kinetic energy of an object depends on the refernce frame of observer? Explain.

A: Kinetic energy is related to the motion of the object. Kinetic energy is proportional to square of v...