Question

A single movable pulley has ______.

विकल्प

• velocity ratio 2, and actual mechanical advantage 2

• velocity ratio 2, and actual mechanical advantage less than 2

• velocity ratio 2, and actual mechanical advantage more than 2

• none of the above

Answer 1

A single movable pulley has velocity ratio 2, and actual mechanical advantage less than 2.

Explanation:

A single movable pulley has a velocity ratio of 2. In a practical pulley, friction and the weight of its moving parts make the actual mechanical advantage less than 2.