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1. State Pascal’s law and mention its applications.
a. Vehicles are raised upward in an automobile service facility using a hydraulic lift that follows Pascal's law.
b. Pascal's law governs the operation of .
c. The is used to compress cotton or textile bundles so that they take up less space.
2. Why is a ball bearing used in a cycle hub?
a. Ball bearing - .
b. Ball bearing the friction of moving machine parts.
c. Rolling friction is than the sliding friction.
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