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Q2) A 400-gram package lying on a horizontal surface is attached to a horizontal string which...

Q2) A 400-gram package lying on a horizontal surface is attached to a horizontal string which passes over a smooth pulley. When a mass of 200 grams is attached to the other end of the string, the package is on the point of moving. Find μS, the coefficient of static friction

Expert Solution

Where, is force of friction , is coefficient of static friction, N is normal force on 400 g block, g in 0.4 g and 0.2 g is acceleration due to gravity and g = 9.8 m/s².

The force equation for the 400 gram block is :

and

or,

or, .........................................(1)

The force equation for the 200 gram block is :

Putting the value of T in equation (1), we get

For any doubt please comment and please give an up vote. Thank you.

genius_generous answered 5 months ago

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