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प्रश्न
A pulley system has a velocity ratio 3. Draw a diagram showing the point of application and direction of load (L), effort (E) and tension (T). It lifts a load of 150 N by an effort of 60 N. Calculate its mechanical advantage. Is the pulley system ideal? Give reason.
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उत्तर
Given,
Effort = 60 N
Load = 150 N
As we know,
M.A. = `"Load"/"Effort"`
Substituting the values in the formula for M.A. we get,
= `150/60`
= 2.5 N
Therefore, Mechanical advantage = 2.5
संबंधित प्रश्न
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.
What is the mechanical advantage of an ideal pulley?
Explain the working of a gear system.
Define the following term in reference to a gear system of Driving gear ?
Draw a diagram of a combination of three movable pulleys and one fixed pulley to lift up a load. In the diagram, show the directions of load, effort and tension in each strand. Find:
- mechanical advantage,
- Velocity ratio and
- efficiency of the combination in ideal situation.
Write two uses of pulleys. Is pulley a force multiplier?
Draw the diagram of a single movable pulley and obtain its mechanical advantage, velocity ratio, and efficiency.
The pulley system shown in the figure is to be used to lift a load W. If the man applying the effort cannot apply a force exceeding 1000 N, what is the maximum load that can be lifted?
The actual load that the man is finally able to lift turns out to be 2700 N. What are the values of the actual M.A., obtained, and the efficiency of the actual set-up?
State one advantage of single movable pulley.
