Question
Question 61:
In case of negative work, the angle between the force and displacement is :
(a) 0°
(b) 45°
(c) 90°
(d) 180°
Found 4 tutors discussing this question
Discuss this question LIVE
11 mins ago
Text solutionVerified
Answer:
Work done is negative when the direction of force is opposite to the direction of motion. So, the angle between force and displacement in the case of negative work is .
Therefore, the answer is, (d) 180°
Therefore, the answer is, (d) 180°
Was this solution helpful?
72
Share
Report
One destination to cover all your homework and assignment needs
Learn Practice Revision Succeed
Instant 1:1 help, 24x7
60, 000+ Expert tutors
Textbook solutions
Big idea maths, McGraw-Hill Education etc
Essay review
Get expert feedback on your essay
Schedule classes
High dosage tutoring from Dedicated 3 experts
Practice more questions from Physics (Lakhmir Singh)
Q1
Question 60:
A car is accelerated on a levelled road and attains a speed of 4 times its initial speed. In this process, the kinetic energy of the car :
(a) does not change
(b) becomes 4 times that of initial kinetic energy
(c) becomes 8 times that of initial kinetic energy
(d) becomes 16 times that of initial kinetic energy
(a) does not change
(b) becomes 4 times that of initial kinetic energy
(c) becomes 8 times that of initial kinetic energy
(d) becomes 16 times that of initial kinetic energy
Q2
Question 61:
In case of negative work, the angle between the force and displacement is :
(a) 0°
(b) 45°
(c) 90°
(d) 180°
(a) 0°
(b) 45°
(c) 90°
(d) 180°
Q3
Question 62:
An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass 3.5 kg. Both the spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same :
(a) acceleration
(b) momentum
(c) potential energy
(d) kinetic energy
View all(a) acceleration
(b) momentum
(c) potential energy
(d) kinetic energy
Practice questions from Physics (Lakhmir Singh)
Question 1
Views: 5,690
Question 2
Views: 5,123
(a) watt
(b) watt-hour
(c) kilowatt-hour
(d) kilowatt
Question 3
Views: 6,083
Question 4
Views: 5,825
(a) the weight of a book at rest on a table
(b) the pull of a moving railway engine on its coaches
(b) the tension in an elastic band wrapped around a parcel
(d) the push of a person's feet when standing on the floor
Practice more questions from Work and Energy
Question 1
Medium
Views: 6,049
Question 2
Medium
Views: 5,710
Practice questions on similar concepts asked by Filo students
Question 1
Views: 5,206
Question 2
Views: 6,075
Question 3
Views: 5,208
Question 4
Views: 5,239
Stuck on the question or explanation?
Connect with our Science tutors online and get step by step solution of this question.
231 students are taking LIVE classes
Question Text | Question 61:
In case of negative work, the angle between the force and displacement is : (a) 0° (b) 45° (c) 90° (d) 180° |
Topic | Work and Energy |
Subject | Science |
Class | Class 9 |
Answer Type | Text solution:1 |
Upvotes | 72 |