49.A smooth massless string passes over a smooth fixed pulley. Two masses M1 and M2 (M1>M2) are tied at the two ends of the string. The masses are allowed to move under gravity starting from rest. The total external force on the two masses is : A) (m1+m2)g B) (m1-m2)(m1-m2)g/(m1+m2) C) (m1-m2)g D) (m1+m2)(m1+m2)g/(m1-m2)

Open in App

Solution

Suggest Corrections

Similar questions

Q. A smooth massless string passes over a smooth fixed pulley. Two masses

m_{1}

and

m_{2}

(m_{1} > m_{2})

are tied at the two ends of the string. The masses are allowed to move under gravity starting from rest. The total external force acting on the two masses is

Q. A constant force

F = \frac{m_{2} g}{2}

is applied on the block of mass

m_{1}

as shown in fig. The string and the pulley are light and the surface of the table is smooth. The acceleration of

m_{1}

Two bodies of masses m₁ and m₂ are connected by a light, inextensible string, which passes over a frictionless pulley. If the pulley is moving upward with uniform acceleration g, then the tension in the string is

Q. A circular pulley of mass

^{'} M^{'}

and radius

^{'} R^{'}

, is hinged at the centre. A long string is wound over this disc and two bodies of mass

m_{1}

and

m_{2}

are attached at it's free ends. Now the bodies are released. Find the accceleration of each body.

Two spheres of masses m1 and m2 (m1>m2) respectively are tied to the ends of a light, inextensible string which passes over a light frictionless pulley. When the masses are released from their initial state of rest, the acceleration of their centre of mass is:

Join BYJU'S Learning Program