There are two mutual perpendicular forces acting on an object. One force acts in

Sail E0 Webinar

Question

There are two mutual perpendicular forces acting on an object. One force acts in the direction of motion of the object and other is perpendicular to the motion. During this interval, the kinetic energy of the body changes from 25 J to 100 J. The work done by the force acting perpendicular to the direction of the object is:

Options:

A . 75 J

B . 0 J

C . 25 J

D . 100 J

Answer: Option B
:
B
Theforce acting perpendicular to the direction of motion produces no displacement and so the work done by this force is zero.
In the above question, the kinetic energy would increase only due to the force acting in the direction of motion or velocity of the object. The force acting perpendicular to the direction of motion has no contribution to the increase in kinetic energy and hence it does no work.

Was this answer helpful ?

Next Question

Submit Solution

More Questions on This Topic :

Question 1. In a hydroelectric power plant, moving water is used for driving the wheels of a turbine to generate electricity. If the....1200 J in 2 minutes then the power generated is

Question 2. A man eats glucose and then he makes a block move, which then comes to rest after sliding on a rough floor. The correct ....rough floor. The correct order of energy changes can be:

Question 3. Solar panels are used for harnessing solar energy. This solar energy is then used to charge an electric cell and this el....a toy. What are the energy changes that take place?

Question 4. A car accelerates from rest to 100 ms−1 in 10 seconds. If mass of the car is 50 kg then power developed by the en....is 50 kg then power developed by the engine is:

Question 5. Each time the heart beats, it requires 5 J of energy. If it beats 72 times in one minute then the power consumed by the ....then the power consumed by the heart is 360 W.

Question 6. The work done in shifting a baggage from the first floor of a building to the second floor is 100 J. The change in gravi....The change in gravitational potential energy of the baggage is:

Question 7. If three objects of same mass are dropped from different heights h1, h2 & h3 such that h1 > h2 < h3,....is true about their corresponding potential energy (PE1, PE2 & PE3):

Question 8. A child is moving on a skateboard at the speed of 2 ms−1. After a force acts on him, his speed becomes&....by the force, if the weight of the child is 20 kg.

Question 9. Statement 1: Force acting on a body increases its kinetic energy from 200 J to 400 J and this force does a positive work....when the displacement is in the direction of force itself.

Question 10. A boy was playing with a spongy ball, compressing and releasing it. What will be the work done by the boy on the ba....ball on the boy respectively at the time of compressing?

Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)

Direction Sense Test Part 1 Reasoning (Hindi)

Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE

Cube & Cuboid Part 1 Reasoning (Hindi)

Data Interpretation (DI) Basic Concept Reasoning (Hindi)

Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)

Sail E0 free webinar Webinars

Real Numbers Part 7 Class 10 Maths

Real Numbers Part 1 Class 10 Maths

Polynomials Part 1 Class 10 Maths

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI

Tabulation - Test Paper 2 Data Interpretation Reasoning & DI

Test Paper 1 Direction Sense Test Reasoning & DI

ICA , RDIC,GFM Free Modal Test Paper - Non - Technical Branch Old Syllabus 2022 - SAIL Junior Officer E0

GFM Combined 1 Free Revision Test SAIL JO E-0