Answer available
Class 10 · Physics · Machines
A machine raises a load of 300 N with an effort of 100 N. Calculate its mechanical advantage.
3 marksMediumNumerical
ICSE question bank
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14 questions
- Answer available
Class 10 · Physics · Machines
Why is the efficiency of a practical machine always less than 100%?
3 marksMediumShort answer
- Answer available
Class 10 · Physics · Machines
The mechanical advantage of a class III lever is always:
1 markMediumMCQ
- Answer available
Class 10 · Physics · Machines
For an ideal machine the efficiency is 1, which means that:
1 markMediumMCQ
- Answer available
Class 10 · Physics · Machines
In a machine the effort moves 5 m while the load moves 1 m. Calculate the velocity ratio.
3 marksMediumNumerical
- Answer available
Class 10 · Physics · Machines
State the velocity ratio of a single fixed pulley and of a single movable pulley, and give one use of each.
3 marksMediumShort answer
- Answer available
Class 10 · Physics · Machines
A machine has a velocity ratio of 6 and an efficiency of 80%. Calculate the mechanical advantage and the effort needed to raise a load of 480 N.
4 marksHardNumerical
- Answer available
Class 10 · Physics · Machines
Define mechanical advantage, velocity ratio and efficiency of a machine.
2 marksEasyShort answer
- Answer available
Class 10 · Physics · Machines
Why does a class III lever always have a mechanical advantage less than one, and why is it still useful?
3 marksMediumApplication based
- Answer available
Class 10 · Physics · Machines
A block and tackle system has 4 pulleys. If the efficiency is 75%, calculate the effort needed to raise a load of 900 N.
4 marksHardNumerical
- Answer available
Class 10 · Physics · Machines
Classify levers into three orders, giving one example of each.
3 marksMediumShort answer
- Answer available
Class 10 · Physics · Machines
The velocity ratio of a single movable pulley is:
1 markEasyMCQ
- Answer available
Class 10 · Physics · Machines
State the class of lever to which a pair of scissors belongs and give one reason for your answer.
2 marksEasyShort answer
- Answer available
Class 10 · Physics · Machines
A pulley system has a velocity ratio of 4 and an efficiency of 80%. Calculate its mechanical advantage.
3 marksMediumNumerical