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प्रश्न
State one advantage of single movable pulley.
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उत्तर
A single movable pulley has the advantage of increasing its mechanical advantage by acting as a force multiplier.
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संबंधित प्रश्न
A block and tackle system has V.R. = 5.
Draw a neat labeled diagram of a system indicating the direction of its load and effort
Is the above pulley system an ideal machine or not?
State whether the following statement is True or False.
A pulley changes the direction of force.
Fill in the blank:
A pulley is used to change ........................
Explain how a gear system can be used to obtain gain in speed? Given one example.
Define the following term in reference to a gear system for Driven gear ?
In which direction does the force need to applied, when a single pulley is used with a mechanical advantage greater than one? How can you change the direction of force applied without altering its mechanical advantage? Draw a labelled diagram of the system.
The diagram below shows an arrangement of three pulleys A, B, and C. The load is marked as L and the effort as E.
- Name the Pulleys A, B, and C.
- Mark in the diagram the directions of load (L), effort (E) and tension T1 and T2 in the two strings.
- How are the magnitudes of L and E related to the tension T1?
- Calculate the mechanical advantage and velocity ratio of the arrangement.
- What assumptions have you made in parts (c) and (d)?
A block and tackle pulley system has a velocity ratio 5. Draw a labelled diagram of this system. In your diagram, indicate clearly the points of application and the directions of the load and effort.
Draw the diagram of a single movable pulley and obtain its mechanical advantage, velocity ratio, and efficiency.
