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  • In the given figure the pulley is assumed massles and frictionless. If the friction force on the object of mass m is f , then the acceleration is in terms of the force F will be equal to - <

In the given figure the pulley is assumed massles and frictionless. If the friction force on the object of mass m is f , then the acceleration is in terms of the force F will be equal to -

Option: 1

\mathrm{\frac{(F-f)}{m}}


Option: 2

\mathrm{\frac{F}{m}}


Option: 3

\mathrm{\frac{\left ( \frac{F}{2}-f \right )}{m}}


Option: 4

None of these


Answers (1)

best_answer

Applied force F= 2T

                       T=\frac{F}{2} --------------(1)

For block of mass m, force of friction due to surface is f.

For sliding the block,

\begin{aligned} T-f & =\text { force on the block } \\ & =\text { mass } \times \text { acceleration } \end{aligned}

Acceleration of block \mathrm{=\frac{T-f}{m}}

                            \mathrm{a=\left(\frac{F}{2}-f\right) / m}                   \mathrm{\therefore \left\{\begin{array}{l} T=F / 2 \\ \text { from (o) } \end{array}\right.}

 

 

Posted by

shivangi.shekhar

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