Massm is released from point A as shown in figurethen tension in the s

1.	Massm is released from point A as shown in figurethen tension in the string at the point B will be-RPMT 2007, 0834.' mg(A) mg(C) 3mg(B) 2mg(D) 4mgller coaster is designed such that riders
Answer» the Velocity gained by the mass at point p is => mgl = 1/2(m)(v²)=> v = √2gl now, force balance at point B, gives => mg -T = mv²/l=> T = mg - (m*2gl/l)=> T = -mg so, the value of Tension is mg .

Massm is released from point A as shown in figurethen tension in the string at the point B will be-RPMT 2007, 0834.' mg(A) mg(C) 3mg(B) 2mg(D) 4mgller coaster is designed such that riders

Answer»

the Velocity gained by the mass at point p is

=> mgl = 1/2*(m)*(v²)=> v = √2gl

now, force balance at point B, gives

=> mg -T = mv²/l=> T = mg - (m*2gl/l)=> T = -mg

so, the value of Tension is mg .