The relationship between force and position is shown in the figure given (in one dimensional case). Find the work done by the force in displaying a body from x= 1 cm to x= 5cm is [This question includes concepts from Work, Energy and Power chapter]

1. 10 erg

2. 20 erg

3. 30 erg

4. 40 erg

Subtopic:  Concept of Work |
 75%
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NEET 2023 - Target Batch - Aryan Raj Singh
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Mathematical Tools questions are over , now starting Work, Energy and Power questions

The kinetic energy k of a particle moving along a circle of radius R depends on the distance covered s as k = as2 where a is a constant. The force acting on the particle is 

(1) 2as2R

(2) 2as1+s2R21/2

(3) 2 as

(4) 2aR2s

Subtopic:  Concept of Work |
 52%
From NCERT
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The driver of a car travelling at velocity v suddenly sees a broad wall in front of him at a distance d. He should 

(1) Brake sharply

(2) Turn sharply

(3) (1) and (2) both

(4) None of the above

Subtopic:  Concept of Work |
From NCERT
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Work done by a frictional force is

(1) Negative

(2) Positive

(3) Zero

(4) All of the above

Subtopic:  Concept of Work |
 61%
From NCERT
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A block of mass 50 kg slides over a horizontal distance of 1 m. If the coefficient of friction between their surfaces is 0.2, then work done against friction is 

(1) 98 J

(2) 72J

(3) 56 J

(4) 34 J

Subtopic:  Concept of Work |
 84%
From NCERT
AIIMS - 2000
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A body of mass m is moving in a circle of radius r with a constant speed v. The force on the body is mv2r and is directed towards the centre. What is the work done by this force in moving the body over half the circumference of the circle

(1) mv2πr2

(2) Zero

(3) mv2r2

(4) πr2mv2

Subtopic:  Concept of Work |
 84%
From NCERT
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A man pushes a wall and fails to displace it. He does:
1. negative work
2. positive but not maximum work
3. no work at all
4. maximum work

Subtopic:  Concept of Work |
 87%
From NCERT
PMT - 1992
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A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 joules, the angle which the force makes with the direction of motion of the body is

(1) 0°

(2) 30°

(3) 60°

(4) 90°

Subtopic:  Concept of Work |
 88%
From NCERT
PMT - 1999
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A particle moves from position r1=3i^+2j^6k^ to position r2=14i^+13j^+9k^ under the action of force 4i^+j^+3k^N. The work done will be 

(1) 100 J

(2) 50 J

(3) 200 J

(4) 75 J

Subtopic:  Concept of Work | Work Done by Variable Force | Power |
 82%
From NCERT
PMT - 2002
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Two bodies of masses 1 kg and 5 kg are dropped gently from the top of a tower. At a point 20 cm from the ground, both the bodies will have the same 

(1) Momentum

(2) Kinetic energy

(3) Velocity

(4) Total energy

Subtopic:  Concept of Work |
 61%
From NCERT
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