Teacher, create graded and non-graded assignments in minutes!

At Teachy you have access to thousands of questions, graded and non-graded assignments, projects, and lesson plans.

Free Registration

Discipline: Physics

Question topic: Work and Mechanical Energy

Source: Originais Teachy

Level of difficulty: Medium

(Originais Teachy 2023) - Question Medium of Physics

A box with a mass of 20 kg is supported on a 5-meter ramp with an inclination angle of 30° relative to the horizontal plane. The box starts its descent from rest and slides without friction along the ramp until it reaches the ground. Calculate the total mechanical energy of the box when it reaches the ground.
a.
500 J
b.
100 J
c.
200 J
d.
300 J
e.
400 J

Answer:

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur id consequat justo. Cras pellentesque urna ante, eget gravida quam pretium ut. Praesent aliquam nibh faucibus ligula placerat, eget pulvinar velit gravida. Nam sollicitudin pretium elit a feugiat. Vestibulum pharetra, sem quis tempor volutpat, magna diam tincidunt enim, in ullamcorper tellus nibh vitae turpis. In egestas convallis ultrices.

Answer key available only for registered teachers.
Register at Teachy and get access now!

Teachy originals
Those who search for this subject, also viewed these questions...
Question 1:

Medium

João decided to conduct an experiment with a spring from his toy, attaching it to the ceiling of his house and hanging a 0.4 kg object at the end. João observed that the spring stretched 20 cm when the object was attached and wants to determine the work done by the elastic force in this situation. Knowing that the object came to rest and that the spring constant is 50 N/m, do the following: a) Calculate the elastic force exerted by the spring on the object. b) Calculate the work done by the elastic force in stretching the spring by 20 cm. c) Explain how the calculated value of the work done by the elastic force can be analyzed so that João can make predictions about the behavior of the object in future experiments.
Teachy originals
Question 2:

Medium

In terms of Elastic Force, it is correct to state that elastic forces are the result of the movement of two particles that attract each other, thus generating elastic potential energy. Where is this elastic potential energy stored?
Teachy originals
Question 3:

Medium

Source: UCPEL
Question 4:

Medium

A person walks 3 km to the north and then 4 km to the east. What is the magnitude and direction of the total displacement vector of the person?
Teachy originals
Did you like these questions? We have more than 100,000 like these for you, teacher!
Save time with Teachy!
With Teachy, you have access to:
Classes and contents
Automatic grading
Assignments, questions and materials
Personalized feedback
Teachy Mascot
BR flagUS flag
Terms of usePrivacy PolicyCookies Policy

2023 - All rights reserved

Follow us
on social media
Instagram LogoLinkedIn LogoTwitter Logo