In a pulley system, a 5-newton weight is to be lifted 2 meters. the rope is pulled 10 meters. the input force is two newtons.

the ima = .

the ama = .

the efficiency = %.

Explanation:

It is given that,

Input force,

Output force,

Input distance,

Output distance,

1. IMA of a machine is the ratio of input distance to the output distance. It is given by :

2. AMA is the actual mechanical advantage of the machine. It is the ratio of output force to the input force. It is given by :

3. The efficiency of the machine is the percentage of output work to the input work.

Hence, this is the required solution.

answer: the correct answer id option(d).

explanation:

snell's law refraction:

the angle of refraction =

the angle of incidence =

refractive index of air = = 1

refractive index of glycerol = 1.47

from the given options, the most closest answer to 63.72° is 65° of option (d).

true

explanation: