Question based on laws of motion (inclined motion )

AI Thread Summary
To determine the force F required for a block to move upward on a frictionless inclined plane, the correct formula is -mgtan(θ/2), contrary to the initial attempt of Mgtan(θ). Clarification on the direction of the applied force F and the definition of the angle θ is necessary for accurate problem-solving. A Free Body Diagram is recommended to visualize the forces acting on the block. Providing detailed calculations and reasoning will aid in understanding the solution. Clear communication of the problem setup is essential for effective assistance.
Abhishek_R
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Homework Statement


what is the value of F needed so that block begins to move upward on frictionles incline plane .

Homework Equations

The Attempt at a Solution


i made an attemp and got the answer - Mgtan(thetta)
but the real answer is - mgtan(thetta/2)
 
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Hi Abhishek_R, Welcome to Physics Forums.

You'll have to describe your problem more clearly: How (in what direction) is the force F applied? How is the angle ##\theta## defined?

Did you draw a Free Body Diagram? Show us the work you did on your attempt.
 

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