|| You are working for a shipping company. Your job is to stand at the bottom of an 8.0-m-long ramp that is inclined at 37° above the horizontal You grab packages off a conveyor belt an:! propel tl'e11 up the ramp. The coefficient of kinetic friction betwee1 the packages and the ramp is μ s . = 0.30. (a) what speed co you need to give a package at the bottom of the ramp so that it has zero speed at the top of the ramp? (b) You coworker is•supposed grab the packages as they arrive at the top or the ramp. but she m1sses one and it Sides back down what is its speed. when it rectums’ to you?
|| You are working for a shipping company. Your job is to stand at the bottom of an 8.0-m-long ramp that is inclined at 37° above the horizontal You grab packages off a conveyor belt an:! propel tl'e11 up the ramp. The coefficient of kinetic friction betwee1 the packages and the ramp is μ s . = 0.30. (a) what speed co you need to give a package at the bottom of the ramp so that it has zero speed at the top of the ramp? (b) You coworker is•supposed grab the packages as they arrive at the top or the ramp. but she m1sses one and it Sides back down what is its speed. when it rectums’ to you?
|| You are working for a shipping company. Your job is to stand at the bottom of an 8.0-m-long ramp that is inclined at 37° above the horizontal You grab packages off a conveyor belt an:! propel tl'e11 up the ramp. The coefficient of kinetic friction betwee1 the packages and the ramp is μs. = 0.30. (a) what speed co you need to give a package at the bottom of the ramp so that it has zero speed at the top of the ramp? (b) You coworker is•supposed grab the packages as they arrive at the top or the ramp. but she m1sses one and it Sides back down what is its speed. when it rectums’ to you?
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A 17kg crate resting on a horizontal surface is pushed as shown. If the coefficient of static friction u, between
the surfaces is 0.24, what is the minimum force (F) required to start the motion?
O a 4.08N
O b. 70.83N
Oc 39.98N
Od. 694.17N
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An object of mass Skg is sliding with a constant velocity of 10m/s on a frcitionless horizontal table. The force
needed to keep the object moving with the same velocity is.
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An object
upward
650N- Ihe Coefficient of friction between
the object and the plane is.
the angle of nclination
30 to Hhe horizontal
of
na ss 15 K9 1s
inclined plane by
a force ot
an
0-40
and
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t What is the acceleration of the object?
b.1f at the top of the plane, Hhe object slide.
down freely
weight, with what acceleiation does it slide?
on the plane under
its
Own
c- What would be the acceleiation If the
plane was frictionless?
*65. Go mmh A toboggan slides down a hill and has a constant velocity. The
angle of the hill is 8.00° with respect to the horizontal. What is the coeffi-
cient of kinetic friction between the surface of the hill and the toboggan?
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