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Kindly guide me above How can solve this of problems

Kindly guide me aboveย 
How can solve this of problemsย 
ย 

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Grade:12th pass

1 Answers

Rituraj Tiwari
askIITians Faculty 1792 Points
3 years ago
Since we know that the force is having the formulae of F=ma where m is the mass and a is the acceleration. This acceleration can be also written as velocity with respect to time or dv/dt. So, force F can be written as m(dv/dt) which will be equal to 2t (given in t he question).

So, now mdv=dt*2t.

Also, we can write mv=t^2 .

Since , by Newtons Laws of motion we have that:-

v=u+gt

Again u=0,

So, substituting the value of v in the force equation we get m*gt=t^2.

m=1, g=10

So, on solving we will get the time t=10 seconds.

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