Question

Q#1: Consider the block weigh 20 lb, that the tension T can be increased to 8lb before the block starts to slide, and that a fore of 4lb will keep the block moving at constant speed once it has been set in motion. Find the coefficient of static and kinetic friction...... Q#2: What force T, at an angle of 30° above the horizontal, is required to drag a 20lb block to the right at constant speed, if the coefficient of kinetic friction between the block and the surface is 0.20? Q#3: What is the friction force if the block is at rest on the surface and the horizontal force of 5N is exerted on it? The block is attached to a string having tension T.

          Q#1: Consider the block weigh 20 lb, that the
tension T can be increased to 8lb before the
block starts to slide, and that a fore of 4lb
will keep the block moving at constant speed
once it has been set in motion. Find the
coefficient of static and kinetic friction......
Q#2: What force T, at an angle of 30° above
the horizontal, is required to drag a 20lb
block to the right at constant speed, if the
coefficient of kinetic friction between the block
and the surface is 0.20?
Q#3: What is the friction force if the block
is at rest on the surface and the horizontal
force of 5N is exerted on it? The block
is attached to a string having tension T.

Q#1: Consider the block weigh 20 lb, that the
tension T can be increased to 8lb before the
block starts to slide, and that a fore of 4lb
will keep the block moving at constant speed
once it has been set in motion. Find the
coefficient of static and kinetic friction......
Q#2: What force T, at an angle of 30° above
the horizontal, is required to drag a 20lb
block to the right at constant speed, if the
coefficient of kinetic friction between the block
and the surface is 0.20?
Q#3: What is the friction force if the block
is at rest on the surface and the horizontal
force of 5N is exerted on it? The block
is attached to a string having tension T.

Added by Sara N.

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