Maths-
General
Easy
Question
Q is a point on the auxiliary circle corresponding to the point P of the ellipse 
= 1. If T is the foot of the perpendicular dropped from the focus S. onto the tangent to the auxiliary circle at Q then the 
SPT is -
- isosceles
- equilateral
- right angled
- right isosceles
The correct answer is: isosceles
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A bob is hanging over a pulley inside a car through a string. The second end of the string is in the hand of a person standing in the car. The car is moving with constant acceleration 'a' directed horizontally as shown in figure. Other end of the string is pulled with constant acceleration ' a ' vertically downward. The tension in the string is equal to :
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