A box is at rest on a flat horizontal surface whose coefficients static and kinetic friction between compartment and surface is us = 0,5 and uk = 0,4, respectively. This box is connected to a winch by a cable, as shown in the image. Once connected, the winch provides a tensile force T for the cable in A, which varies according to the curve presented. Determine the speed of the box in the time of 4 seconds. Consider that, at time t = 0, the system was at rest.
A box is at rest on a flat horizontal surface whose coefficients static and kinetic friction between compartment and surface is us = 0,5 and uk = 0,4, respectively. This box is connected to a winch by a cable, as shown in the image. Once connected, the winch provides a tensile force T for the cable in A, which varies according to the curve presented. Determine the speed of the box in the time of 4 seconds. Consider that, at time t = 0, the system was at rest.
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A box is at rest on a flat horizontal surface whose coefficients static and kinetic friction between compartment and surface is us = 0,5 and uk = 0,4,
respectively. This box is connected to a winch by a cable, as shown in the image.
Once connected, the winch provides a tensile force T for the cable in A, which varies according to the curve
presented. Determine the speed of the box in the time of 4 seconds. Consider that, at time t = 0, the system was at rest.
Transcribed Image Text:T = 400t/²
A
T (N)
800
T = 400 t/2
t(s)
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