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 2 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: 5,448
Question 2
Views: 5,684
Question 3
Views: 5,296
Question 4
Views: 5,277
(a) electric motor
(b) alternator
(c) turbine
(d) electric heater
Practice more questions from Work and Energy
Question 2
Views: 5,740
Question 3
Views: 5,598
(1) keeps on increasing regularly
(2) keeps on increasing irregularly
(3) first increases slowly, then decreases rapidly and eventually becomes constant
(4) first increases gradually and then becomes constant.
Practice questions on similar concepts asked by Filo students
Question 1
Views: 5,377
Question 2
Views: 5,479
Question 3
Views: 6,024
Question 4
Views: 5,226
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 |