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Mechanical Aptitude 5 - Pulleys
1.
Which one of the following requires an input force of 30 N to lift the object?
Pulley system (block and tackle) with 2 support ropes.
Pulley system (block and tackle) with 1 support ropes.
Pulley system (block and tackle) with 3 support ropes.
Pulley system (block and tackle) with 4 support ropes.
2.
Which one of the following requires an input force of 15 N to lift the object?
Pulley system (block and tackle) with 1 support ropes.
Pulley system (block and tackle) with 2 support ropes.
Pulley system (block and tackle) with 3 support ropes.
Pulley system (block and tackle) with 4 support ropes.
3.
Which one of the following requires an input force of 20 N to lift the object?
Pulley system (block and tackle) with 3 support ropes.
Pulley system (block and tackle) with 1 support ropes.
Pulley system (block and tackle) with 2 support ropes.
Pulley system (block and tackle) with 4 support ropes.
4.
Which weight requires the least force to move?
Weight A
Weight B
Equal weight
None
5.
How much rope would have to be pulled out of the pulley to raise the object 10 cm?
20 cm
10 cm
5 cm
15 cm
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