a) m g h = 60 * g * 5 sin(70º)
b) K.E. = 1/2 m v^2 = m g h
... same as a) with 1 kg instead of 60 kg
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?
1 answer
1 answer