Question

23.
A body of mass 20 kg at one end and another of 60 kg at the other end of a string passing
over a frictionless pully are suspended as shown in the figure. Acceleration of this system is
m/s2
20 Kg
60 kg​

Answer 1

Answer:

60 kg............

Explanation:

mass 20 kg at one end and another of 60 kg at the other end of a string passing

over a frictionless pully are suspended as shown in the figure. Acceleration

Answer 2

Given: A body of mass 20 kg at one end and another of 60 kg at the other end of a string passing

over a frictionless pully are suspended.

To find: Acceleration of the system

Solution: We are given that the pully is frictionless. Therefore, both the masses of 20kg and 60kg will have the same acceleration that is a.

let the tension in the string be T

Now writing a force equation for both the masses.

The force causing motion= driving force - opposing force

Let's write it for mass 60kg

60a= 600-T

for mass 20kg

20a= T- 200

on solving we get

80a= 400

a= 5 m/s^2

Therefore, the acceleration of the system will be 5ms^-2.