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  4. A small sphere is suspended by string from the ceiling of a car. If the car begins to move with a constant acceleration a, the tension generated in the string is

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Q. A small sphere is suspended by string from the ceiling of a car. If the car begins to move with a constant acceleration a, the tension generated in the string is

Laws of Motion

Solution:

image
Net acceleration(a)' $=\sqrt{ a ^{2}+ g ^{2}+2 ag \cos \theta}$
$\theta=90^{\circ}$
$a^{\prime}=\sqrt{a^{2}+g^{2}}$
$T=m \sqrt{a^{2}+g^{2}}$