An athlete at the gym holds a 2.5 kg steel ball in his hand. His arm is 70 cm long and has a mass of 4.0 kg. a) What is the magnitude of the torque about his shoulder if he holds his arm straight out to his side, parallel to the floor?
b) What is the magnitude of the torque about his shoulder if he holds his arm straight, but 55? below horizontal?

B

Explanation:

Yea

Answer

given,

number of crest (N)= 5

time(t) = 50 s

distance between to successive crest = 32 m

a) Period

b) frequency

c) wavelength

   distance between to consecutive crest is wavelength

    wavelength = 32 m

d) speed

         v = f λ

         v = 0.1 x 32

         v = 3.2 m/s

e) Amplitude

    We cannot determine amplitude because data is not given.