contestada

The block moves up an incline with constant speed. what is the total work wtotal done on the block by all forces as the block moves a distance l = 3.60 m up the incline? include only the work done after the block has started moving at constant speed, not the work needed to start the block moving from rest.

Respuesta :

meerkat18
I found a similar problem from another website which shows the diagram. This is because we need to compute first the net force to determine the work. Afterwhich, we can use the formula: Work = Force*Distance.

Net Force = 12.2 N - wcosθ
Since the weight is 30 N and the angle is 24°,
Net Force = 12.2 - 30cos24° = -15.2 N

So,
W = (-15.2 N)(3.60 m)
W = -54.7 J
Ver imagen meerkat18

Otras preguntas

Q&A Education