Physics, asked by sukrititom6364, 10 hours ago

a particle of mass m moving along a straight line experiences force F which varies with the distance travelled as shown in the graph if the velocity of the particle at x is root 2fx/m then velocity at 2x is

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Answered by sjhsaalishashaikh8a2
0

Explanation:

A particle of mass m moving along a straight line experiences force F which varies with the distance x travelled as shown in the figure. If the velocity of the particle at x

0

is

m

2F

0

x

0

, then velocity at 4x

0

is:

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Hard

Solution

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Correct option is

D

none of these

Increase in KE = work done by all forces

ΔKE=F

net

⋅ds

2

1

mv

2

2

2

1

m×(

m

2F

0

x

0

)=

2

1

(2F

0

+F

0

)3x

0

⇒v

2

=

m

11F

0

x

0

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A particle of mass m moves along the quarter section of the circular path whose centre is at the origin. The radius of the circular path is a. A force

F

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i

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j

^

newton acts on the particle, where x,y denote the coordinates of position of the particle. The work done by this force in taking the particle from point A (a,0) to point B (0,a) along the circular path is

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