At a post office, a parcel that is an m kg box slides down a ramp inclined at an angle θ with the horizontal, as shown. The coefficient of kinetic friction between the box and the ramp is μK, and the coefficient of static friction for the same is μS. Notice that the coordinate axes have been chosen with the x axis directed up the incline, as shown. Enter a numeric answer for the magnitude of the acceleration in meters per squared seconds when the angle of the incline is 21° and the coefficient of kinetic friction is 0.055. Kinematics may help you here. Using the numbers from the previous step, give a numeric answer for the time in seconds that elapse when the package, initially at rest, travels a distance of 4.5 m down the ramp.
At a post office, a parcel that is an m kg box slides down a ramp inclined at an angle θ with the horizontal, as shown. The coefficient of kinetic friction between the box and the ramp is μK, and the coefficient of static friction for the same is μS. Notice that the coordinate axes have been chosen with the x axis directed up the incline, as shown.
Enter a numeric answer for the magnitude of the acceleration in meters per squared seconds when the angle of the incline is 21° and the coefficient of kinetic friction is 0.055.
Using the numbers from the previous step, give a numeric answer for the time in seconds that elapse when the package, initially at rest, travels a distance of 4.5 m down the ramp.
Using the numbers from the previous steps, give a numeric answer for the speed of the package at the moment it has traveled a distance of 4.5 m down the ramp.
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