Question
A pendulum of length L=26.0 cm and mass m= 168 g is released from rest when the cord makes an angle of 65.2 degrees with the vertical.
A) how far (m) does the mass fall before reaching its lowest point?
My work: .26m - .109 = .151 m
B) how much work (J) is done by gravity as it falls to its lowest point?
My work: (.168 kg)(9.8 m/s)= 1.646 N
.26cos65.2 = .109
C) how much work (J) is done by the string tension as it falls to its lowest point?
My work: same as b
A) how far (m) does the mass fall before reaching its lowest point?
My work: .26m - .109 = .151 m
B) how much work (J) is done by gravity as it falls to its lowest point?
My work: (.168 kg)(9.8 m/s)= 1.646 N
.26cos65.2 = .109
C) how much work (J) is done by the string tension as it falls to its lowest point?
My work: same as b