Asked by AH
a 60kg painter climbs a ladder, he goes 5.00m. The ladder makes an angle of 70 degrees. (g = 9.8 m/s^2).
a)
How much work is done by the painter in ascending the ladder?
b)
The painter drops 1.0kg pain bucket from the top of the ladder (length = 5m..not height!) What is the kinetic energy when it reaches the ground?
a)
How much work is done by the painter in ascending the ladder?
b)
The painter drops 1.0kg pain bucket from the top of the ladder (length = 5m..not height!) What is the kinetic energy when it reaches the ground?
Answers
Answered by
Scott
a) m g h = 60 * g * 5 sin(70ยบ)
b) K.E. = 1/2 m v^2 = m g h
... same as a) with 1 kg instead of 60 kg
b) K.E. = 1/2 m v^2 = m g h
... same as a) with 1 kg instead of 60 kg
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