Cathy, a 125lb actress playing Peter Pan, is hoisted above the stage in order to “fly” by a stagehand pulling on a compound pulley system that has 6 supporting strands with a force of 30lbs. A) What is the ideal mechanical advantage of the pulley?

The ideal mechanical advantage (IMA) of the pulley is 6

Explanation:

The question parameters are;

The mass of the actress playing Peter Pan = 125 lb

The force applied by the stagehand to the pulley to hoist her = 30 lbs

The Ideal Mechanical Advantage (IMA) of a pulley = The number of strands (rope) the pulley has

Therefore, the Ideal Mechanical Advantage (IMA) of the given pulley with 6 strands = 6.

the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of

5

9

degree celsius.

a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.

a temperature increase of

5

9

degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.

a) i only

b) ii only

c) iii only

d) i and ii only

answer:

my guess it 8 i'm probably wrong